I wanted to buy a new battery for my S3 for mine gave big signs of weakness, and this new battery is not better, it's even worse !! The battery does not even take a morning I have to charge my phone 2-3 times a day and then, after 15 days of use, it is very simple to recharge it at all. In short not easy to make a choice at the time of purchase for all proposed batteries appear the same but what is certain is that I could not have a worse elsewhere. Anyway I wanted a new battery to replace the old, well it's the opposite now it is the former who gets the service. Conclusion: buy completely useless even if the price is derisory