At first I was a little skeptical because of the opinion of other buyers. But I have the battery nevertheless ordered. Goods arrived very quickly (1 day delivery time). The first impression was very good, it all looks as if this is the original Samsung battery for the S3 Mini. Went smoothly into the smartphone, has exactly the same size. After the first charges that used to go to 100%, this battery will last for a long time by, easy 1 1/2 days. So that everything is like on the first day of the mobile phone, so full reliability. The first battery lasted just over 1 1/2 years through until then often after a short time of about 80% fell to 9%, which was then a sure sign to replace him. The purchase has been fully paid off well because of the good price.