It arrived today and I put it in the phone and gave it to Mariza but the phone didn't show anything on the screen, it doesn't turn on nor does it show the battery symbol that it's charging

The battery was installed but it doesn't seem to charge more than 55%. However, it still lasts about 1 day, even with this 55%!

I replaced the original battery after 3.5 years. The new one (which is obviously genuine as it has NFC) does not have the performance of the original. Without intensive use, it needs to be charged daily. With intensive use, it needs to be charged twice a day.

After 2 months of use, its performance drops very quickly and it discharges in 2 to 3 hours. Not satisfied at all.

Very good product, at least until now. My old battery had broken, resulting in it discharging in a very short time. That's why I bought a new battery, where its duration is at normal levels!

It does not have the performance that you expect it to have, i.e. the factory battery that comes with the phone.

The battery from morning at 08:00 until afternoon at 18:00 approximately without internet usage drops to 15-20%. Checked for many days. Not satisfied at all. With only internet and just Facebook without games until 15:00, it drops to the same percentage.

(Owner of S3 NEO)
This is the third battery I'm changing -_- ..
First of all, it only lasts for a few months... then goodbye! (of course, it does NOT have NFC)
I don't know, but when it's on its last legs, it starts swelling so much that the cover doesn't close properly.
+ the fact that it goes from 40% to suddenly shutting off...
This particular model from Samsung is very unreliable when it comes to battery life

It lasts well for 6 months, but then it drains after a few hours of use. Generally, batteries are not Samsung's strong point.

It charges quickly...faster than the old one..!!...many times it doesn't charge and I have to completely remove the battery from the phone and then it comes back.

The first few months were fine.
Now, 8 months of use later, it finishes very quickly and charges extremely slowly.
And the first battery had the same issues, though.
The positive thing is that it can be found at a much better price than the dealership's.

It is what I expected. The previous (the original battery of the mobile) needed charging during the day (I have had the mobile for 2 years and 3 months). Now it lasts the whole day without any problem (with continuous use of Bluetooth, relatively low internet usage, and many calls and SMS)

The battery discharges within three hours. I sent it for replacement to the store where I bought it, but the new one had the same problem

Surely it did not have the performance of the original battery but it holds relatively well 8 months later. It requires daily charging without heavy use of the S3.

The 4 stars are for the short duration even with moderate to low usage. It needs to be charged every 1-1.5 days. I have had the product for about 35 days. The previous battery (of its mother) lasted 1.5 years

Unfortunately, the battery lasts very little on the Samsung S3 mobile phone. But it is probably due to the low memory of the phone. It needs daily charging.

I will give it 4 stars for now because I have only had it for a month. Hopefully, I won't be disappointed. The battery for the Samsung Galaxy S3 Neo is small and doesn't last long, that's why its warranty is only 6 months. It's a shame that such a good phone has such a small capacity and short battery life. I hope it lasts me at least a year.

Be careful about the battery they will sell you. There are many (cheap) ones that are not authentic. They sold me one like that, I realized it, returned it, and because they didn't raise any objections and were polite and young kids, I won't say which store it was. From the Samsung representative, I got an offer for 21 euros, but I haven't looked into it further. (---Edit 21/9/2016--- I bought the battery for 21 euros from an official representative recommended to me by Samsung's customer service. I bought it and about a year later, it's still working fine).
The way to see if the battery they sold you is authentic (at least for the Galaxy S3 and S3 LTE, not all phones are the same), is as follows.
You put the battery in and try to send something to a friend of yours via NFC. (If you don't know how NFC works, google it, I won't explain it here).
The S3 has the NFC chip inside the battery (the Note 2, for example, has it on the back cover), so if the battery is fake, the NFC won't work!

A good battery for someone who wants to replace their already non-functional factory battery of their mobile phone, a good choice with proper autonomy and good build quality compared to other batteries.