Have the battery after a very long search for an original battery then found and ordered. I am subject to one of the opinion that the capacity is reduced by even slow. But in any case I wanted to use the NFC feature the other day my Action cam and found that it does not work. The antenna is so integrated with the Galaxy S3 in the battery. Obviously, this battery has no built-in antenna, although yes advertised "original manufacturers battery". Anyway, the thing goes back now. Mess that one from Amazon only counterfeit goods from the Far East gets.