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Xiaomi Mi Router 4A (Gigabit Version) Wireless Router Wi‑Fi 5 with 2 Gigabit Ports
DSL Modems / Routers

Xiaomi Mi Router 4A (Gigabit Version) Wireless Router Wi‑Fi 5 with 2 Gigabit Ports

Key features:

  • For Simple Everyday Use
  • Dual Band Wi-Fi AC1200
  • Two Gigabit LAN Ports
  • One Gigabit WAN Port
  • Four External Antennas
  • Large 128MB RAM
See full description

Top specs

  • Maximum Wireless Speed

    Theoretical maximum speed with a wirelessly connected device primarily used for marketing purposes. The speed of each connected device depends on factors such as distance, obstacles, the number of other devices connected, the number of other networks in the same area, etc.

  • Ethernet Ports

    The number of ethernet ports that the device has for direct wired device connections. Most routers offer 4 ports.

  • Generation

    The Wi-Fi generation is a more user-friendly term for networking standards that affect maximum Wi-Fi speed, distance, sensitivity to obstacles, etc.

    Wi‑Fi 5

    The most widely used Wi-Fi standard, significantly faster than Wi-Fi 4. Wi-Fi 5 can currently meet the needs of most users. The next generation (Wi-Fi 6) began to be released in 2019 and offers the ability to connect many more devices to serve the increasingly smart devices in a home. Each newer generation is compatible with devices that support a previous one.

  • Wi-Fi Frequency

    The frequencies in which the device can transmit. Most modern routers transmit on two (2.4 & 5GHz) or even three frequencies. Additional frequencies allow for faster speeds on more devices, with the biggest difference observed from one frequency to the other.

    Dual Band (2.4 & 5GHz)

    They transmit signals on two frequencies. They offer higher speeds compared to singles and connect more devices.
  • See all
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Product report

Description

Description

Enjoy dual-band wireless speed for faster and smoother internet access. With 300Mbps from the 2.4GHz band and 867Mbps from the 5GHz band, the maximum wireless speed is up to 1167Mbps

4 external antennas

4 external omnidirectional antennas tested for accuracy, with carefully designed internal structure and configuration

Significantly improve transmission performance, even in complex environments

Dual heatsinks for better system stability

A specially processed metal substrate is combined with nanomaterials with exceptional thermal radiation characteristics. It offers excellent heat absorption and dissipation capabilities for effective chip temperature reduction and improved system stability.

Built-in signal amplifier provides good Wi-Fi signal and wide coverage

The 2.4GHz and 5GHz wireless chipset integrates PA and LNA. The PA (power amplifier) effectively boosts the signal transmission power, while the LNA (low noise amplifier) can improve the signal receiver sensitivity. It allows for signal transmission over longer distances, with better wall penetration and wider coverage.

A smart error correction algorithm improves weak signals for more stable and efficient transmission

The 5GHz band supports the LDPC error correction algorithm to enhance anti-interference capabilities during data transmission.

Significantly improved Wi-Fi signal coverage for enhanced data transmission performance.

Large 64MB memory for fast processing and stable operation

With memory up to 64MB, data transmission is more stable, ensuring the smooth operation of a larger number of functions, as well as the stable connectivity of more smart devices.

Smart speed limit for faster Internet access

You can choose the automated configuration of the router or allow the Mi Router 4A to perform smart optimization, so you can have a smoother experience playing games, watching videos, or browsing the Web. For a better online experience, you can prioritize the network bandwidth to a single device.

Smart Denial of Unauthorized Access

Guarantee of higher Internet speed
Most cases of unauthorized access to Wi-Fi are due to weak passwords or installed network sharing software. The Mi Router 4A will notify you when a new device connects to the network. If a suspicious device attempts to connect to the network, depending on the security level, the connection will be blocked or you will be asked to add the device to the blacklist.

Wi-Fi Optimization

To boost your network speed, open the Mi WiFi app, go to the toolbox, and simply click on "Wi-Fi Optimization" to automatically monitor and optimize the Wi-Fi channel in multiple dimensions.

Manufacturer

Manufacturer Details

Warnings & Safety Information
See full description

Specifications

Specifications

Network Specifications

Type
Router

Type

The devices we encounter are standalone routers, routers with built-in modems, and mobile routers.

A router requires a separate modem and distributes the connection to multiple devices via Wi-Fi or Ethernet, but cannot connect directly to the internet. A modem/router combines a modem and router in one device, connects directly to the internet provider, and distributes the connection to the local network. A mobile router, on the other hand, uses a SIM card and mobile data to create a portable Wi-Fi hotspot, ideal for use outside the home or in areas without a fixed connection.

Router

Plain router (without modem). The router is a device to which other devices (e.g. computer, mobile, TV) connect either wirelessly or with a cable, and it shares internet access with them. It receives internet access through a separate device called a modem.
Maximum Wireless Speed
1167 Mbps

Maximum Wireless Speed

Theoretical maximum speed with a wirelessly connected device primarily used for marketing purposes. The speed of each connected device depends on factors such as distance, obstacles, the number of other devices connected, the number of other networks in the same area, etc.
Maximum LAN Speed
1000 Mbps

Maximum LAN Speed

The maximum speed that the modem/router can offer to devices connected to it via ethernet cable.

1000
The 1000Mbps are mainly important in professional environments where the transfer of large files (e.g. high-definition videos) is a frequent occurrence. Note that all involved devices must support this speed, otherwise data transmission will be limited to the speed of the slowest device.
Portable Hotspot
No

Portable Hotspot

Mobile routers with built-in battery so you can use them anywhere.

These mobile routers have a SIM card slot for wireless internet access through 3G/4G mobile networks.
Wi-Fi Generation
Wi‑Fi 5

Wi-Fi Generation

The Wi-Fi generation is a more user-friendly term for networking standards that affect maximum Wi-Fi speed, distance, sensitivity to obstacles, etc.

Wi‑Fi 5
The most widely used Wi-Fi standard, significantly faster than Wi-Fi 4. Wi-Fi 5 can currently meet the needs of most users. The next generation (Wi-Fi 6) began to be released in 2019 and offers the ability to connect many more devices to serve the increasingly smart devices in a home. Each newer generation is compatible with devices that support a previous one.
Network Standards
IEEE 802.11a, IEEE 802.11 b/g/n, IEEE 802.11ac, IEEE 802.3ab, IEEE 802.3/3u

Network Standards

The device supports various networking standards that affect the maximum Wi-Fi speed, distance, sensitivity to obstacles, etc. This information is also reflected in the more user-friendly Wi-Fi generation. It is recommended to choose a Wi-Fi 5 (IEEE 802.11ac) or Wi-Fi 6 (IEEE 802.11ax) device.

IEEE 802.11 b/g/n

The older Wi-Fi standard, known as Wi-Fi 4, is significantly slower than Wi-Fi 5 (IEEE 802.11ac) and Wi-Fi 6 (IEEE 802.11ax).

It is recommended for use with few devices and for applications that do not require high speeds. For most users, it would be preferable to choose a Wi-Fi 5 or 6 device according to their needs. Each newer generation is compatible with devices that support a previous one.

IEEE 802.11ac
The most common Wi-Fi standard, known as Wi-Fi 5, is significantly faster than Wi-Fi 4 (IEEE 802.11 a/b/g/n).

Wi-Fi 5 can currently meet the needs of most users, but there is now the next generation Wi-Fi 6 (IEEE 802.11ax) which offers the ability to connect many more devices to serve the increasingly smart devices in a home.

Each newer generation is compatible with devices that support some previous one.
Wi-Fi Frequency
Dual Band (2.4 & 5GHz)

Wi-Fi Frequency

The frequencies in which the device can transmit. Most modern routers transmit on two (2.4 & 5GHz) or even three frequencies. Additional frequencies allow for faster speeds on more devices, with the biggest difference observed from one frequency to the other.

Dual Band (2.4 & 5GHz)
They transmit signals on two frequencies. They offer higher speeds compared to singles and connect more devices.

Connectivity

Wireless network
Yes

Wireless network

The device has a wireless network to which we can connect wireless devices that support it. In case it doesn't, the connection can only be made through an ethernet cable.
Ethernet LAN connections
2

Ethernet LAN connections

The number of ethernet ports that the device has for direct wired device connections. Most routers offer 4 ports.
ISDN Connection
No
SIM slot
No

SIM slot

The device has a SIM card slot for internet connection through a mobile network. The SIM card should have an active data plan.
WAN Port
Yes
GPON Port (Direct Fiber)
-

Security

Encryption Protocols
WPA-Personal, WPA2-Personal

Encryption Protocols

The security protocols supported by the device for encrypting data transmitted wirelessly and protecting against third-party connections to your network.

The first protocol was WEP, which was replaced by WPA, which in turn evolves into generations with each generation having a corporate and home version. Anything older than WPA2 is not considered secure.

It is recommended that the device support at least WPA2-Personal (PSK) for home use.

WPA-Personal
The WPA protocol was a temporary significant improvement over WEP but still vulnerable and outdated. It has now been replaced by WPA 2. WPA-Personal is intended for home use sacrificing security, compared to WPA-Enterprise, for easier installation, using the PSK certification process (pre-shared keys).
WPA2-Personal
Replace WPA in 2004 with AES (Advanced Encryption Standard) technology, which is approved by the US government for confidential documents. It is considered safe for home use. 2. WPA2-Personal is intended for home use, sacrificing security compared to WPA2-Enterprise for easier installation, using the PSK (pre-shared keys) certification process.
MAC Address Filtering
No

MAC Address Filtering

MAC (media access control) address filtering is the ability of a device to allow specific devices to connect based on their unique MAC address, while excluding any device with a MAC address that has not been defined as acceptable.

Extras

Virtual Private Network (VPN)
No

Virtual Private Network (VPN)

The device has the ability to set up a VPN (Virtual Private Network) so that traffic from all devices on our network passes through it. 2. The VPN acts as an intermediary between us and the rest of the internet. This way, we can give the impression that we are geographically located in another country and the pages we visit see the VPN address as the visitor's address, not ours. 3. This provides us with anonymity and access to content with geographic restrictions (e.g. some YouTube videos are only available in certain countries, the Netflix catalog is different depending on the country, etc.). 4. VPN services are usually paid for by subscription.
VoIP
No
Mesh
No

Mesh

It is a complete home WiFi system with multiple access points designed to eliminate dead zones and provide seamless WiFi throughout your home with higher speeds and more devices.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

See all specifications

Reviews (368)

Reviews

4.5
368
4.5
Review this product
  1. 264
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  3. 25
  4. 13
  5. 10
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  • Ease of installation

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Reviews by our members

  • Giasafox
    3
    Giasafox

    This is the Xiaomi Mi Router 4A – International / 100M (R4AC). This particular router is not suitable for openwrt installation (and generally for experimentation):
    Flash: 8MB, RAM: 64MB and SoC: MediaTek MT7628AN.

    The service from skroutz and the store was excellent!

    Translated from Greek ·
    Did you find this review helpful?
  • Billis Ch
    5
    Billis Ch

    Verified purchase

    Very good as a WiFi AP in combination with a Cosmote router, with very good range. However, from what I see compared to the Speedport 2, they have slightly less power behind walls and metals. I had it to stream games from my PC to my mobile and I was very satisfied.

    Translated from Greek ·
    Did you find this review helpful?
  • yiotis85
    5
    2 out of 2 members found this review helpful
    yiotis85
    Expert user

    Every home should have two! You connect it to the LAN of the provider’s modem (yes, the Xiaomi does not take calls as it does not support VOIP, it’s a router) and you turn off the wireless network broadcast of the provider, so that only the Mi Router 4A broadcasts. For a 6-year-old device, it has satisfactory configurations for the average user. Excellent Mi WiFi app that doesn’t require you to connect with an address or ethernet + laptop! It supports VPN but does not have a kill switch. I do not recommend installing OpenWRT as it can very easily become bricked (irreversible). I use the second one as a WiFi access point for the first and I cover 200m2 without major losses.

    Translated from Greek ·
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  • George Zotos
    5
    1 out of 1 members found this review helpful
    George Zotos

    Verified purchase

    With the stock firmware it's ok. Much better than the provider's router at least.
    With open wrt firmware it becomes much better with many more features!

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • J_M33
    1
    2 out of 12 members found this review helpful
    J_M33

    Verified purchase

    I have a 300Mbps fiber at my house and I have the router on the upper floor. I wanted to use the Xiaomi as an extender basically to get better signal on the lower floor. Without the Xiaomi, I was getting 78Mbps and with the Xiaomi, I only get 42Mbps. So not only did it not maintain the speed that my router was providing downstairs, but it also cut it in half. It's not worth it for any reason. It's better to get a power line and connect a cheaper router on top.

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • v.kyriazopoulos
    3
    1 out of 3 members found this review helpful
    v.kyriazopoulos

    Verified purchase

    Easy installation, I have Vodafone and because I didn't have good signal in the rooms, I decided to buy it after reading the reviews. The main modem connected relatively easily. I don't think the signal changes much.

    I want to test the signal quality with video calls because I had issues with freezing. I will come back.

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • nmagi
    5
    4 out of 4 members found this review helpful
    nmagi

    Verified purchase

    It is impressive how simple the management interface is in repeater mode and it makes sense. Again, when connecting it as a repeater, you need to connect it to the LAN port of the provider's router first, get an IP, and connect with the Xiaomi application. These are pleasantly simple and function very well

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • kostas13theodorakopoulos
    1
    2 out of 9 members found this review helpful
    kostas13theodorakopoulos

    Verified purchase

    When I installed it, it gave me quite a hard time. I bought it to use it as a repeater, but it didn't connect at first. It couldn't detect the 5g network of the router. At some point, it detected and connected, and it worked flawlessly for about a month. Three days ago, it got stuck, so I reset it. It installed successfully on the first try, but today it did the same thing again, and I can't install it. The provider's 5g network is still not being detected, and I think that's the problem.

    Translated from Greek ·
    • Speed
    • Ease of installation
    • Operational stability
    • Value for money
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  • redatak
    4
    2 out of 7 members found this review helpful
    redatak

    Basically, I'm not a tech-savvy user with custom firmware, etc. I plug it in, remove all the limiters, and make simple changes to settings. This specific router is advertised as having a maximum WiFi speed of 876mb/s on 5GHz, but it doesn't even come close. I stand right in front of the router, reboot the router, modem, PC, but nothing. On the wired connection, it almost reaches gigabit as promised with a 5-7% deviation, but I'm okay with that. So, minus one star for the out of specs WiFi. Other than that, no disconnections, decent WiFi signal (nothing amazing), and a good price for what it offers. By the way, I've had it for 2.5 years.

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • Nadia_K38
    5
    2 out of 2 members found this review helpful
    Nadia_K38

    Verified purchase

    I, in turn, wanted to comment on the fact that apart from being a Router, it can also be used as a repeater (with both wired and wireless connections) with the corresponding settings.
    Otherwise, it is a great device with many functionalities such as guest connections, monitoring who is connected to the network, device-specific speeds, etc.

    Translated from Greek ·
    • Operational stability
    • Speed
    • Value for money
    • Ease of installation
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  • Michael_Chourdakis
    5
    3 out of 3 members found this review helpful
    Michael_Chourdakis

    Verified purchase

    Put OpenWRT and it will work with IPv6 (which the stock version does not have). For me, it works perfectly as I want it to receive internet from WiFi and provide it to my PC on the LAN.

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • Michael _Man_2
    5
    Michael _Man_2

    Verified purchase

    Very good price. Very good that it has mobile management from wherever you are

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • konmpar
    1
    5 out of 14 members found this review helpful
    konmpar

    Give a little more money and get a TP-Link, the range on this one is equivalent to that of the provider's router.

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • Αlexander
    5
    2 out of 4 members found this review helpful
    Αlexander

    A very good router for those who want an upgraded experience in their wireless connection at home. However, I had some issues with port forwarding, so I gave it to a friend who wanted a better router. If you are looking for something simple, easy to set up, and that will work without causing any trouble, then I definitely recommend it!

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • filipposf
    5
    2 out of 3 members found this review helpful
    filipposf

    Verified purchase

    It's fine with its own firmware.
    Because it runs many xiaomi, I tried to change it to openwrt but it couldn't be done with the new firmware, it's locked.

    Translated from Greek ·
    • Operational stability
    • Speed
    • Value for money
    • Ease of installation
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  • ilos_sss
    5
    14 out of 16 members found this review helpful
    ilos_sss

    Verified purchase

    Expert mode off: A simple router in the range of €40 (purchased 5 months ago for €20). Easy to install, user-friendly interface, management app. You don't expect much from a router in this price range. Isn't that right?

    Expert mode on: The software is nothing special. Flash OpenWRT and you essentially have a MikroTik imitation for €20. OpenVPN/WireGuard, security (WPA3/WPA Enterprise), speed, absolute flexibility, and the ability to customize it as you want, and above all, no communication with servers in China.

    For those who don't know what I'm talking about: https://openwrt.org/

    Joking aside, the router alone, with this modification, is literally value for money. However, this particular software requires some knowledge regarding networks. Keep that in mind :)

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • vasilispapath
    5
    vasilispapath

    Verified purchase

    Guys, I had the provider's product and it was constantly freezing. While my line is very good and fast, the WiFi part was terrible. I got this one, connected it with a cable and now I access WiFi through it. It never freezes, day and night! It's cheap and for the use I wanted, it's the best choice. Now, for other uses, it has some disadvantages. Only having 2 Ethernets at the back is a bit restrictive.

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • Poloman
    5
    4 out of 4 members found this review helpful
    Poloman

    Verified purchase

    I got it to install openwrt and it's simply excellent. For anyone who wants to get involved and upgrade their home network, it's excellent. I didn't try it at all stock.

    Translated from Greek ·
    • Operational stability
    • Speed
    • Value for money
    • Ease of installation
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  • vangman7
    4
    1 out of 3 members found this review helpful
    vangman7

    Verified purchase

    Very good router, slim and lightweight, very stable. It does its job. Simple functions and options. It doesn't do anything special nor does it have such a good signal to stand out.

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • Eleftherios Kondylis
    3
    3 out of 6 members found this review helpful
    Eleftherios Kondylis

    Verified purchase

    It could be easier and have more functions in its connection. We struggled a bit to set it up.

    Translated from Greek ·
    • Speed
    • Value for money
    • Operational Stability
    • Ease of installation
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  • _Nikos_K
    5
    7 out of 7 members found this review helpful
    _Nikos_K

    Verified purchase

    Cheap and good router with a very good management application from Xiaomi. Connected to the Cosmote modem router via ethernet and everything worked on the first try. Just be careful with devices that have static IP, from 192.168.1.*** that the Cosmote router gave, you need to change it to 192.168.31.*** that the Xiaomi router gives.

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • Stavros_Grigoriadis
    5
    2 out of 18 members found this review helpful
    Stavros_Grigoriadis

    Verified purchase

    Okay, we got something! :)

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • tomster1979
    5
    3 out of 3 members found this review helpful
    tomster1979

    I was looking for a way to boost the Wi-Fi signal in my house. As a modem router, I had an old (provider) one that didn't perform well in simultaneous connections. My connection is 100 Mbps and I never reached above 60-65 Mbps. As soon as I installed it, the Wi-Fi is blazing fast. 96+ For its price, it is the ultimate value for money. I highly recommend it without hesitation.

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • killer1paok
    2
    1 out of 21 members found this review helpful
    killer1paok

    Good only if it is in the room you are in, otherwise if you go to another room it loses signal up to 100%. From my personal experience, it is rubbish..... It's not worth buying it, it's better to spend a little more money and go for a TP-LINK which is much better especially in terms of signal.

    Translated from Greek ·
    • Ease of installation
    • Speed
    • Operational stability
    • Value for money
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  • AchillesXX
    4
    10 out of 10 members found this review helpful
    AchillesXX

    Verified purchase

    I will only reply to those friends who say that it is not connected to the application. If you don't sign up and then scan the router, well, yes, it doesn't connect to anything. So, sign up definitely and then the connection is very easy unless you are a fool. If you are still a fool, ask someone else to do it for you. I completely agree about the range. It doesn't easily penetrate walls like the corresponding Tenda that I have connected to the Fritzbox. It is super fast but you have to be close, my dear mother.

    Translated from Greek ·
    • Ease of installation
    • Speed
    • Value for money
    • Operational Stability
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  • Αναστάσιος Σελαλμαζίδης
    4
    1 out of 4 members found this review helpful
    Αναστάσιος Σελαλμαζίδης

    Verified purchase

    For its price, it is perfect.
    It gave me a hard time during installation as it needs to be done through a mobile application.
    To download it, I struggled. The page was in Chinese.
    You can't change many things. Especially the fact that the subnet is locked at 192.168.31.* is a big hassle. At least I couldn't find a way to change it.
    On the positive side, you can see the speed of the users connected to it, you can block users, you can receive notifications when a new user connects, you can set it to turn off at certain times for power saving.
    I got it to boost the signal in my house and it does exactly what I wanted. Especially for the price of <20€, I highly recommend it

    Translated from Greek ·
    • Operational stability
    • Speed
    • Value for money
    • Ease of installation
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  • 46stratos
    5
    6 out of 7 members found this review helpful
    46stratos

    Verified purchase

    In a 200Mbps fiber connection, I have seen download speeds of 265 and upload speeds of 310 in Thessaloniki. I believe the connection is worth its money.

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
    • Value for money
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  • stej
    5
    18 out of 24 members found this review helpful
    stej

    Verified purchase

    It is a shame how good this device with openwrt is for the 20 euros it costs.
    But only with openwrt. If you plan to leave it with the factory firmware, know that half of your bandwidth will be consumed to send telemetry to China.

    Translated from Greek ·
    • Value for money
    • Operational Stability
    • Ease of installation
    • Speed
    Did you find this review helpful?
  • Giasafox
    3
    Giasafox

    This is the Xiaomi Mi Router 4A – International / 100M (R4AC). This particular router is not suitable for openwrt installation (and generally for experimentation):
    Flash: 8MB, RAM: 64MB and SoC: MediaTek MT7628AN.

    The service from skroutz and the store was excellent!

    Translated from Greek ·
    0
  • Billis Ch
    5
    Billis Ch

    Very good as a WiFi AP in combination with a Cosmote router, with very good range. However, from what I see compared to the Speedport 2, they have slightly less power behind walls and metals. I had it to stream games from my PC to my mobile and I was very satisfied.

    Translated from Greek ·
    0
  • yiotis85
    5
    yiotis85

    Every home should have two! You connect it to the LAN of the provider’s modem (yes, the Xiaomi does not take calls as it does not support VOIP, it’s a router) and you turn off the wireless network broadcast of the provider, so that only the Mi Router 4A broadcasts. For a 6-year-old device, it has satisfactory configurations for the average user. Excellent Mi WiFi app that doesn’t require you to connect with an address or ethernet + laptop! It supports VPN but does not have a kill switch. I do not recommend installing OpenWRT as it can very easily become bricked (irreversible). I use the second one as a WiFi access point for the first and I cover 200m2 without major losses.

    Translated from Greek ·
    2
  • George Zotos
    5
    George Zotos

    With the stock firmware it's ok. Much better than the provider's router at least.
    With open wrt firmware it becomes much better with many more features!

    Translated from Greek ·
    1
  • J_M33
    1
    J_M33

    I have a 300Mbps fiber at my house and I have the router on the upper floor. I wanted to use the Xiaomi as an extender basically to get better signal on the lower floor. Without the Xiaomi, I was getting 78Mbps and with the Xiaomi, I only get 42Mbps. So not only did it not maintain the speed that my router was providing downstairs, but it also cut it in half. It's not worth it for any reason. It's better to get a power line and connect a cheaper router on top.

    Translated from Greek ·
    2
  • See all

Description & Specifications

Enjoy dual-band wireless speed for faster and smoother internet access. With 300Mbps from the 2.4GHz band and 867Mbps from the 5GHz band, the maximum wireless speed is up to 1167Mbps

4 external antennas

4 external omnidirectional antennas tested for accuracy, with carefully designed internal structure and configuration

Significantly improve transmission performance, even in complex environments

Dual heatsinks for better system stability

A specially processed metal substrate is combined with nanomaterials with exceptional thermal radiation characteristics. It offers excellent heat absorption and dissipation capabilities for effective chip temperature reduction and improved system stability.

Built-in signal amplifier provides good Wi-Fi signal and wide coverage

The 2.4GHz and 5GHz wireless chipset integrates PA and LNA. The PA (power amplifier) effectively boosts the signal transmission power, while the LNA (low noise amplifier) can improve the signal receiver sensitivity. It allows for signal transmission over longer distances, with better wall penetration and wider coverage.

A smart error correction algorithm improves weak signals for more stable and efficient transmission

The 5GHz band supports the LDPC error correction algorithm to enhance anti-interference capabilities during data transmission.

Significantly improved Wi-Fi signal coverage for enhanced data transmission performance.

Large 64MB memory for fast processing and stable operation

With memory up to 64MB, data transmission is more stable, ensuring the smooth operation of a larger number of functions, as well as the stable connectivity of more smart devices.

Smart speed limit for faster Internet access

You can choose the automated configuration of the router or allow the Mi Router 4A to perform smart optimization, so you can have a smoother experience playing games, watching videos, or browsing the Web. For a better online experience, you can prioritize the network bandwidth to a single device.

Smart Denial of Unauthorized Access

Guarantee of higher Internet speed
Most cases of unauthorized access to Wi-Fi are due to weak passwords or installed network sharing software. The Mi Router 4A will notify you when a new device connects to the network. If a suspicious device attempts to connect to the network, depending on the security level, the connection will be blocked or you will be asked to add the device to the blacklist.

Wi-Fi Optimization

To boost your network speed, open the Mi WiFi app, go to the toolbox, and simply click on "Wi-Fi Optimization" to automatically monitor and optimize the Wi-Fi channel in multiple dimensions.

Manufacturer

Manufacturer Details

Warnings & Safety Information

Network Specifications

Type
Router

Type

The devices we encounter are standalone routers, routers with built-in modems, and mobile routers.

A router requires a separate modem and distributes the connection to multiple devices via Wi-Fi or Ethernet, but cannot connect directly to the internet. A modem/router combines a modem and router in one device, connects directly to the internet provider, and distributes the connection to the local network. A mobile router, on the other hand, uses a SIM card and mobile data to create a portable Wi-Fi hotspot, ideal for use outside the home or in areas without a fixed connection.

Router

Plain router (without modem). The router is a device to which other devices (e.g. computer, mobile, TV) connect either wirelessly or with a cable, and it shares internet access with them. It receives internet access through a separate device called a modem.
Maximum Wireless Speed
1167 Mbps

Maximum Wireless Speed

Theoretical maximum speed with a wirelessly connected device primarily used for marketing purposes. The speed of each connected device depends on factors such as distance, obstacles, the number of other devices connected, the number of other networks in the same area, etc.
Maximum LAN Speed
1000 Mbps

Maximum LAN Speed

The maximum speed that the modem/router can offer to devices connected to it via ethernet cable.

1000
The 1000Mbps are mainly important in professional environments where the transfer of large files (e.g. high-definition videos) is a frequent occurrence. Note that all involved devices must support this speed, otherwise data transmission will be limited to the speed of the slowest device.
Portable Hotspot
No

Portable Hotspot

Mobile routers with built-in battery so you can use them anywhere.

These mobile routers have a SIM card slot for wireless internet access through 3G/4G mobile networks.
Wi-Fi Generation
Wi‑Fi 5

Wi-Fi Generation

The Wi-Fi generation is a more user-friendly term for networking standards that affect maximum Wi-Fi speed, distance, sensitivity to obstacles, etc.

Wi‑Fi 5
The most widely used Wi-Fi standard, significantly faster than Wi-Fi 4. Wi-Fi 5 can currently meet the needs of most users. The next generation (Wi-Fi 6) began to be released in 2019 and offers the ability to connect many more devices to serve the increasingly smart devices in a home. Each newer generation is compatible with devices that support a previous one.
Network Standards
IEEE 802.11a, IEEE 802.11 b/g/n, IEEE 802.11ac, IEEE 802.3ab, IEEE 802.3/3u

Network Standards

The device supports various networking standards that affect the maximum Wi-Fi speed, distance, sensitivity to obstacles, etc. This information is also reflected in the more user-friendly Wi-Fi generation. It is recommended to choose a Wi-Fi 5 (IEEE 802.11ac) or Wi-Fi 6 (IEEE 802.11ax) device.

IEEE 802.11 b/g/n

The older Wi-Fi standard, known as Wi-Fi 4, is significantly slower than Wi-Fi 5 (IEEE 802.11ac) and Wi-Fi 6 (IEEE 802.11ax).

It is recommended for use with few devices and for applications that do not require high speeds. For most users, it would be preferable to choose a Wi-Fi 5 or 6 device according to their needs. Each newer generation is compatible with devices that support a previous one.

IEEE 802.11ac
The most common Wi-Fi standard, known as Wi-Fi 5, is significantly faster than Wi-Fi 4 (IEEE 802.11 a/b/g/n).

Wi-Fi 5 can currently meet the needs of most users, but there is now the next generation Wi-Fi 6 (IEEE 802.11ax) which offers the ability to connect many more devices to serve the increasingly smart devices in a home.

Each newer generation is compatible with devices that support some previous one.
Wi-Fi Frequency
Dual Band (2.4 & 5GHz)

Wi-Fi Frequency

The frequencies in which the device can transmit. Most modern routers transmit on two (2.4 & 5GHz) or even three frequencies. Additional frequencies allow for faster speeds on more devices, with the biggest difference observed from one frequency to the other.

Dual Band (2.4 & 5GHz)
They transmit signals on two frequencies. They offer higher speeds compared to singles and connect more devices.

Connectivity

Wireless network
Yes

Wireless network

The device has a wireless network to which we can connect wireless devices that support it. In case it doesn't, the connection can only be made through an ethernet cable.
Ethernet LAN connections
2

Ethernet LAN connections

The number of ethernet ports that the device has for direct wired device connections. Most routers offer 4 ports.
ISDN Connection
No
SIM slot
No

SIM slot

The device has a SIM card slot for internet connection through a mobile network. The SIM card should have an active data plan.
WAN Port
Yes
GPON Port (Direct Fiber)
-

Security

Encryption Protocols
WPA-Personal, WPA2-Personal

Encryption Protocols

The security protocols supported by the device for encrypting data transmitted wirelessly and protecting against third-party connections to your network.

The first protocol was WEP, which was replaced by WPA, which in turn evolves into generations with each generation having a corporate and home version. Anything older than WPA2 is not considered secure.

It is recommended that the device support at least WPA2-Personal (PSK) for home use.

WPA-Personal
The WPA protocol was a temporary significant improvement over WEP but still vulnerable and outdated. It has now been replaced by WPA 2. WPA-Personal is intended for home use sacrificing security, compared to WPA-Enterprise, for easier installation, using the PSK certification process (pre-shared keys).
WPA2-Personal
Replace WPA in 2004 with AES (Advanced Encryption Standard) technology, which is approved by the US government for confidential documents. It is considered safe for home use. 2. WPA2-Personal is intended for home use, sacrificing security compared to WPA2-Enterprise for easier installation, using the PSK (pre-shared keys) certification process.
MAC Address Filtering
No

MAC Address Filtering

MAC (media access control) address filtering is the ability of a device to allow specific devices to connect based on their unique MAC address, while excluding any device with a MAC address that has not been defined as acceptable.

Extras

Virtual Private Network (VPN)
No

Virtual Private Network (VPN)

The device has the ability to set up a VPN (Virtual Private Network) so that traffic from all devices on our network passes through it. 2. The VPN acts as an intermediary between us and the rest of the internet. This way, we can give the impression that we are geographically located in another country and the pages we visit see the VPN address as the visitor's address, not ours. 3. This provides us with anonymity and access to content with geographic restrictions (e.g. some YouTube videos are only available in certain countries, the Netflix catalog is different depending on the country, etc.). 4. VPN services are usually paid for by subscription.
VoIP
No
Mesh
No

Mesh

It is a complete home WiFi system with multiple access points designed to eliminate dead zones and provide seamless WiFi throughout your home with higher speeds and more devices.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Reviews (368)

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Reviews by our members

  • Giasafox
    3
    Giasafox

    This is the Xiaomi Mi Router 4A – International / 100M (R4AC). This particular router is not suitable for openwrt installation (and generally for experimentation):
    Flash: 8MB, RAM: 64MB and SoC: MediaTek MT7628AN.

    The service from skroutz and the store was excellent!

    Translated from Greek ·
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  • Billis Ch
    5
    Billis Ch

    Verified purchase

    Very good as a WiFi AP in combination with a Cosmote router, with very good range. However, from what I see compared to the Speedport 2, they have slightly less power behind walls and metals. I had it to stream games from my PC to my mobile and I was very satisfied.

    Translated from Greek ·
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  • yiotis85
    5
    2 out of 2 members found this review helpful
    yiotis85
    Expert user

    Every home should have two! You connect it to the LAN of the provider’s modem (yes, the Xiaomi does not take calls as it does not support VOIP, it’s a router) and you turn off the wireless network broadcast of the provider, so that only the Mi Router 4A broadcasts. For a 6-year-old device, it has satisfactory configurations for the average user. Excellent Mi WiFi app that doesn’t require you to connect with an address or ethernet + laptop! It supports VPN but does not have a kill switch. I do not recommend installing OpenWRT as it can very easily become bricked (irreversible). I use the second one as a WiFi access point for the first and I cover 200m2 without major losses.

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  • George Zotos
    5
    1 out of 1 members found this review helpful
    George Zotos

    Verified purchase

    With the stock firmware it's ok. Much better than the provider's router at least.
    With open wrt firmware it becomes much better with many more features!

    Translated from Greek ·
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    • Ease of installation
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  • J_M33
    1
    2 out of 12 members found this review helpful
    J_M33

    Verified purchase

    I have a 300Mbps fiber at my house and I have the router on the upper floor. I wanted to use the Xiaomi as an extender basically to get better signal on the lower floor. Without the Xiaomi, I was getting 78Mbps and with the Xiaomi, I only get 42Mbps. So not only did it not maintain the speed that my router was providing downstairs, but it also cut it in half. It's not worth it for any reason. It's better to get a power line and connect a cheaper router on top.

    Translated from Greek ·
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    • Ease of installation
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  • v.kyriazopoulos
    3
    1 out of 3 members found this review helpful
    v.kyriazopoulos

    Verified purchase

    Easy installation, I have Vodafone and because I didn't have good signal in the rooms, I decided to buy it after reading the reviews. The main modem connected relatively easily. I don't think the signal changes much.

    I want to test the signal quality with video calls because I had issues with freezing. I will come back.

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  • nmagi
    5
    4 out of 4 members found this review helpful
    nmagi

    Verified purchase

    It is impressive how simple the management interface is in repeater mode and it makes sense. Again, when connecting it as a repeater, you need to connect it to the LAN port of the provider's router first, get an IP, and connect with the Xiaomi application. These are pleasantly simple and function very well

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    • Value for money
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  • kostas13theodorakopoulos
    1
    2 out of 9 members found this review helpful
    kostas13theodorakopoulos

    Verified purchase

    When I installed it, it gave me quite a hard time. I bought it to use it as a repeater, but it didn't connect at first. It couldn't detect the 5g network of the router. At some point, it detected and connected, and it worked flawlessly for about a month. Three days ago, it got stuck, so I reset it. It installed successfully on the first try, but today it did the same thing again, and I can't install it. The provider's 5g network is still not being detected, and I think that's the problem.

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  • redatak
    4
    2 out of 7 members found this review helpful
    redatak

    Basically, I'm not a tech-savvy user with custom firmware, etc. I plug it in, remove all the limiters, and make simple changes to settings. This specific router is advertised as having a maximum WiFi speed of 876mb/s on 5GHz, but it doesn't even come close. I stand right in front of the router, reboot the router, modem, PC, but nothing. On the wired connection, it almost reaches gigabit as promised with a 5-7% deviation, but I'm okay with that. So, minus one star for the out of specs WiFi. Other than that, no disconnections, decent WiFi signal (nothing amazing), and a good price for what it offers. By the way, I've had it for 2.5 years.

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  • Nadia_K38
    5
    2 out of 2 members found this review helpful
    Nadia_K38

    Verified purchase

    I, in turn, wanted to comment on the fact that apart from being a Router, it can also be used as a repeater (with both wired and wireless connections) with the corresponding settings.
    Otherwise, it is a great device with many functionalities such as guest connections, monitoring who is connected to the network, device-specific speeds, etc.

    Translated from Greek ·
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  • Michael_Chourdakis
    5
    3 out of 3 members found this review helpful
    Michael_Chourdakis

    Verified purchase

    Put OpenWRT and it will work with IPv6 (which the stock version does not have). For me, it works perfectly as I want it to receive internet from WiFi and provide it to my PC on the LAN.

    Translated from Greek ·
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    • Ease of installation
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    • Value for money
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  • Michael _Man_2
    5
    Michael _Man_2

    Verified purchase

    Very good price. Very good that it has mobile management from wherever you are

    Translated from Greek ·
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  • konmpar
    1
    5 out of 14 members found this review helpful
    konmpar

    Give a little more money and get a TP-Link, the range on this one is equivalent to that of the provider's router.

    Translated from Greek ·
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  • Αlexander
    5
    2 out of 4 members found this review helpful
    Αlexander

    A very good router for those who want an upgraded experience in their wireless connection at home. However, I had some issues with port forwarding, so I gave it to a friend who wanted a better router. If you are looking for something simple, easy to set up, and that will work without causing any trouble, then I definitely recommend it!

    Translated from Greek ·
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    • Ease of installation
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  • filipposf
    5
    2 out of 3 members found this review helpful
    filipposf

    Verified purchase

    It's fine with its own firmware.
    Because it runs many xiaomi, I tried to change it to openwrt but it couldn't be done with the new firmware, it's locked.

    Translated from Greek ·
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  • ilos_sss
    5
    14 out of 16 members found this review helpful
    ilos_sss

    Verified purchase

    Expert mode off: A simple router in the range of €40 (purchased 5 months ago for €20). Easy to install, user-friendly interface, management app. You don't expect much from a router in this price range. Isn't that right?

    Expert mode on: The software is nothing special. Flash OpenWRT and you essentially have a MikroTik imitation for €20. OpenVPN/WireGuard, security (WPA3/WPA Enterprise), speed, absolute flexibility, and the ability to customize it as you want, and above all, no communication with servers in China.

    For those who don't know what I'm talking about: https://openwrt.org/

    Joking aside, the router alone, with this modification, is literally value for money. However, this particular software requires some knowledge regarding networks. Keep that in mind :)

    Translated from Greek ·
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  • vasilispapath
    5
    vasilispapath

    Verified purchase

    Guys, I had the provider's product and it was constantly freezing. While my line is very good and fast, the WiFi part was terrible. I got this one, connected it with a cable and now I access WiFi through it. It never freezes, day and night! It's cheap and for the use I wanted, it's the best choice. Now, for other uses, it has some disadvantages. Only having 2 Ethernets at the back is a bit restrictive.

    Translated from Greek ·
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  • Poloman
    5
    4 out of 4 members found this review helpful
    Poloman

    Verified purchase

    I got it to install openwrt and it's simply excellent. For anyone who wants to get involved and upgrade their home network, it's excellent. I didn't try it at all stock.

    Translated from Greek ·
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  • vangman7
    4
    1 out of 3 members found this review helpful
    vangman7

    Verified purchase

    Very good router, slim and lightweight, very stable. It does its job. Simple functions and options. It doesn't do anything special nor does it have such a good signal to stand out.

    Translated from Greek ·
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  • Eleftherios Kondylis
    3
    3 out of 6 members found this review helpful
    Eleftherios Kondylis

    Verified purchase

    It could be easier and have more functions in its connection. We struggled a bit to set it up.

    Translated from Greek ·
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    • Operational Stability
    • Ease of installation
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  • _Nikos_K
    5
    7 out of 7 members found this review helpful
    _Nikos_K

    Verified purchase

    Cheap and good router with a very good management application from Xiaomi. Connected to the Cosmote modem router via ethernet and everything worked on the first try. Just be careful with devices that have static IP, from 192.168.1.*** that the Cosmote router gave, you need to change it to 192.168.31.*** that the Xiaomi router gives.

    Translated from Greek ·
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  • Stavros_Grigoriadis
    5
    2 out of 18 members found this review helpful
    Stavros_Grigoriadis

    Verified purchase

    Okay, we got something! :)

    Translated from Greek ·
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    • Ease of installation
    • Speed
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  • tomster1979
    5
    3 out of 3 members found this review helpful
    tomster1979

    I was looking for a way to boost the Wi-Fi signal in my house. As a modem router, I had an old (provider) one that didn't perform well in simultaneous connections. My connection is 100 Mbps and I never reached above 60-65 Mbps. As soon as I installed it, the Wi-Fi is blazing fast. 96+ For its price, it is the ultimate value for money. I highly recommend it without hesitation.

    Translated from Greek ·
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    • Ease of installation
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  • killer1paok
    2
    1 out of 21 members found this review helpful
    killer1paok

    Good only if it is in the room you are in, otherwise if you go to another room it loses signal up to 100%. From my personal experience, it is rubbish..... It's not worth buying it, it's better to spend a little more money and go for a TP-LINK which is much better especially in terms of signal.

    Translated from Greek ·
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    • Operational stability
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  • AchillesXX
    4
    10 out of 10 members found this review helpful
    AchillesXX

    Verified purchase

    I will only reply to those friends who say that it is not connected to the application. If you don't sign up and then scan the router, well, yes, it doesn't connect to anything. So, sign up definitely and then the connection is very easy unless you are a fool. If you are still a fool, ask someone else to do it for you. I completely agree about the range. It doesn't easily penetrate walls like the corresponding Tenda that I have connected to the Fritzbox. It is super fast but you have to be close, my dear mother.

    Translated from Greek ·
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  • Αναστάσιος Σελαλμαζίδης
    4
    1 out of 4 members found this review helpful
    Αναστάσιος Σελαλμαζίδης

    Verified purchase

    For its price, it is perfect.
    It gave me a hard time during installation as it needs to be done through a mobile application.
    To download it, I struggled. The page was in Chinese.
    You can't change many things. Especially the fact that the subnet is locked at 192.168.31.* is a big hassle. At least I couldn't find a way to change it.
    On the positive side, you can see the speed of the users connected to it, you can block users, you can receive notifications when a new user connects, you can set it to turn off at certain times for power saving.
    I got it to boost the signal in my house and it does exactly what I wanted. Especially for the price of <20€, I highly recommend it

    Translated from Greek ·
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    • Speed
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    • Ease of installation
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  • 46stratos
    5
    6 out of 7 members found this review helpful
    46stratos

    Verified purchase

    In a 200Mbps fiber connection, I have seen download speeds of 265 and upload speeds of 310 in Thessaloniki. I believe the connection is worth its money.

    Translated from Greek ·
    • Operational stability
    • Ease of installation
    • Speed
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  • stej
    5
    18 out of 24 members found this review helpful
    stej

    Verified purchase

    It is a shame how good this device with openwrt is for the 20 euros it costs.
    But only with openwrt. If you plan to leave it with the factory firmware, know that half of your bandwidth will be consumed to send telemetry to China.

    Translated from Greek ·
    • Value for money
    • Operational Stability
    • Ease of installation
    • Speed
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  • Giasafox
    3
    Giasafox

    This is the Xiaomi Mi Router 4A – International / 100M (R4AC). This particular router is not suitable for openwrt installation (and generally for experimentation):
    Flash: 8MB, RAM: 64MB and SoC: MediaTek MT7628AN.

    The service from skroutz and the store was excellent!

    Translated from Greek ·
    0
  • Billis Ch
    5
    Billis Ch

    Very good as a WiFi AP in combination with a Cosmote router, with very good range. However, from what I see compared to the Speedport 2, they have slightly less power behind walls and metals. I had it to stream games from my PC to my mobile and I was very satisfied.

    Translated from Greek ·
    0
  • yiotis85
    5
    yiotis85

    Every home should have two! You connect it to the LAN of the provider’s modem (yes, the Xiaomi does not take calls as it does not support VOIP, it’s a router) and you turn off the wireless network broadcast of the provider, so that only the Mi Router 4A broadcasts. For a 6-year-old device, it has satisfactory configurations for the average user. Excellent Mi WiFi app that doesn’t require you to connect with an address or ethernet + laptop! It supports VPN but does not have a kill switch. I do not recommend installing OpenWRT as it can very easily become bricked (irreversible). I use the second one as a WiFi access point for the first and I cover 200m2 without major losses.

    Translated from Greek ·
    2
  • George Zotos
    5
    George Zotos

    With the stock firmware it's ok. Much better than the provider's router at least.
    With open wrt firmware it becomes much better with many more features!

    Translated from Greek ·
    1
  • J_M33
    1
    J_M33

    I have a 300Mbps fiber at my house and I have the router on the upper floor. I wanted to use the Xiaomi as an extender basically to get better signal on the lower floor. Without the Xiaomi, I was getting 78Mbps and with the Xiaomi, I only get 42Mbps. So not only did it not maintain the speed that my router was providing downstairs, but it also cut it in half. It's not worth it for any reason. It's better to get a power line and connect a cheaper router on top.

    Translated from Greek ·
    2
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