I read a lot of comments about the activation. Okay guys, it's not rocket science, the steps are clear and there is always the help of ChatGTP with detailed instructions and guidance. After about 1 month of use the battery is at 81%, so far everything is fine.

A respectable GPS Tracker that does what it promises. I use it with a Cosmote SIM for mobile internet with SIM and for €20 we were done for 1 year.
As soon as my car moves, it immediately sends me an SMS with the location, and whenever I want I can see the last location before the device "falls asleep".
Its battery seems to last quite a while. I haven't recharged it yet, although I installed it about 1 month ago. I will come back regarding the battery, but the first impression is excellent!!!
I recommend it because for this amount of money you won't easily find a reliable GPS tracker.
Review: My battery lasted 2 months and I charged it again. Therefore, it is worth buying!!!
Update: I bought another one for a 2nd car!!!

Excellent for its price. I put in a Vodafone Giga WiFi on the spot card and didn't spend a single euro. It gives 200 MB per month, which is more than enough for the GPS since it needs 50 MB per month. Just one call to Vodafone to activate the data when you get the card in your hands. The rest have been mentioned in previous comments.

IMPORTANT - READ THIS BEFORE YOU START!!!! After struggling for hours searching and reading the product instructions and other users' comments, I discovered something simple that is not written anywhere, not even in the product's instructions, and it prevented the device from working. Whatever SIM card you choose, you must first insert it into a mobile phone and disable the SIM code through the phone's security settings. Otherwise, with an active SIM code, it will not work! After doing this, it worked immediately without having to send messages, etc., as written in the instructions and comments.

I recommend it because the battery lasts for 2 months, measured. Of course, I have deactivated the reminders via SMS. The only reminder I have is only when the battery voltage drops. I put in a planet sim card and everything is ok! Now, I would like the magnet to be a bit stronger but it's ok! Where I placed it, it doesn't really matter that much.

Attention! As someone else mentioned and since it's not the first time, they send the TK905, which is €15 cheaper, instead of the TK905b which has more than double the battery! Fortunately, it was already mentioned and I was careful!

Everything is fine, but on one of the two fences I have set, it loses the signal outside the fence and eventually shows me that I have parked 200 meters away.

Perfect, easy to install based on the video I saw from the friend who uploaded it, it does what it says.

It does its job as it should. Very easy to use. The only negative is that it takes a while to wake up. It takes about 2 minutes from the moment of vibration for a notification to arrive

I saw positive comments and since the description also mentioned machines, I bought it. Question now, where is this whole thing supposed to go in the machine guys? I am not evaluating performance and operation as I never installed it

I have it for about 4 days, the battery is at 95%. The signal is quite good. It looks good. After about 2 and a bit months, it is well worth its money by far

very simple through the app. I put the cosmote SIM with €20 only data with 15G for a year. With this SIM it does not send a message to notify you about anything. you see live and the history. it has a few meters deviation. when the vehicle is stopped for about 10 minutes or more the device turns off and does not accept commands. it will show you offline. we remove the SIM during charging

The packaging has Greek instructions. I followed them and it sends movement and vibration alerts to Winnes. The alerts come as notifications on the phone. I used a Cosmote SIM only for internet at 20 euros with 15 GB for 1 year. Second day and the battery is still at 100%.

The battery really lasts for more than a month. I have left it unused for two months and the battery is at 60%! It only works outdoors. If you change your phone, it takes time to transfer your account. A disadvantage is that it is like a brick. I had a lot of trouble fitting it into the bike. In the "instructions" the Chinese even mock us with their chinenglish. Without the instructions from other users here, I wouldn't have figured it out. Other than that, gets the job done, it is accurate, records the route, which allows you to see where it ended up before it goes underground and loses signal. It goes into stealth mode when not moving, which is extra safety so professional thieves don't find it

The difference between the 905 B of TK star and the 905 is that it should have a 12,000 mA battery and it is larger in size, three centimeters taller. In the purchases you make, it is not enough for it to just say 905 B on the back, but it should also be the tall GPS as you will see from the photos I uploaded, because when it is the short GPS it has the small battery inside at 5000 mAh. A simple way to check is to just unscrew the six screws and read the mAh; the battery should say 12000

I have had it for 2 weeks and I am satisfied. It needs to be combined with a SIM card (I have put in a Cosmote card with data only, €20 for one year). It does not communicate via SMS (the card is to blame for this) but with its app, I can make all the settings easily. There is a setting for how often it sends a signal, so you can save battery more efficiently. Regarding previous comments, keep in mind that for any intervention in its settings, it needs to be active (e.g., you need to be on the move, or just after you stop). You can't adjust it, for example, when it is already parked, as it goes into standby and keeps whatever setting you had put in. I recommend it, it is a good purchase

SOS! To make sure that the sticker on the back of the tracker actually shows the correct information (Device ID), send an SMS with the command "check123456". Unfortunately, mine had the wrong information and I couldn't connect at all.

The device works fine (905b) at first glance. However, I have some issues:
1) When I press geofence on Winnes, the map does not load at all so I cannot set it up.
2) In historical route, it does not show any results
3) I can't find where the option for 12h standby is so it can save power.

Can anyone help me?
Thank you

the first device stopped charging after 6 months, the store sent me a new one and although I have full communication via SMS, when I enter the app it says on top not enabled

I have purchased the TKSTAR TK905B 4G GPS Tracker and combined it with a PlanetSim Direct Card. Although I had some trouble setting up the card, it works just fine in the end, and it is accurate. I have created a guide in Greek for installation and presentation of the tracker and the Winnes Gps App; if you want, you can consult it here: https://youtu.be/-0R-fwz7gq0
22/11/2025 I have also uploaded a second video with details about charging, what you need to pay attention to, the data consumption of the Sim card, as well as how to activate Notifications on your phone. You can visit it here: https://youtu.be/DY7i0QPtGZg
30/11/2025 I uploaded a guide on how to keep it permanently charging in the car, connected to the fuse box to draw power, using the 12v to 5v YS128 charger converter. You can visit the video here: https://youtu.be/MRPX3JJ53ds

great accuracy and excellent battery.
If it needs to be charged, the sim card must definitely be removed and charging should be done with a simple charger, not a fast charger.
the winnes gps app is very useful and easy to use.

I have had it in my possession for two days... I thought it would be difficult to program it through the app, but I was wrong... It's important for the device-app to work properly that the SIM card is activated... personally I use planetsim.
I don't see any significant deviation in the distance.
It would be good to disable SMS notifications because the card balance decreases quickly if you have set a geofence.

First of all, this particular tracker does not have a subscription, unlike most others. You pay for the device and a SIM card. I bought a Cosmote SIM with 15 GB for 1 year for 20 euros.

The location is very accurate with a deviation of at most 5 meters. The battery lasts for months on a single charge. The build quality seems very good and sturdy.
You can use it via SMS/call but prefer the app, because even if they destroy it or remove the SIM or for any reason it has no signal, the last location will be saved on the company's server and you can see it from there.

To connect to the app, you enter the device id and for the password, the last 4 digits of the device id. If the password doesn't work, it is 123456. If you have any questions, they have support and they are active

The installation process was extremely simple, with clear and easily accessible instructions both online and within the product's app. The overall user experience left a very positive impression.

I should point out an important note regarding charging: it seems that the device does not have a built-in charging management system. For this reason, it is necessary that the charger and cable you use provide less than 1A current during charging (old USB 2.0 or power bank). And most importantly, it should be unplugged from charging when it reaches 90-100%, which is a bit troublesome because it requires constant attention while charging.

ATTENTION!! DON'T EVEN THINK ABOUT BUYING IT! In general, it works but there is a big issue with the app and connectivity. Its accuracy is low, but the battery lasts quite a while. I STRONGLY RECOMMEND NOT TO BUY IT!!

I have had it for a week, the first impressions are good...
I connected it with a cheap planet sim direct and the installation was immediate and easy. Through Google, you get an accurate location with address and postal code of where you have left the vehicle. The battery (10000 mAh) has dropped only 3% in a week so I expect a long duration...

Relatively convenient and easy to set up, but as others have mentioned, after a few months the battery has developed an issue and drains in less than a month even with power saving. The company's app, besides having a very bad UI, doesn't work on some options and may show the GPS moving without actually changing position. A waste of money...