I am also a j7 user the samsung is getting better and better day by day. J7 is the highest selling phone of last year the phone is so smooth and easy to use that every body should but it. Games dont get hang in this handset. The slimest phone by j7 and the fingerprint lock is also good and quick. The battery is 3300mAh. Phone can easily be used for 30hours after charging it to 100% . The camera clearity is also nice. It is an good product everything samsung offers us in this range is at its best. Now I am using this phone so I know each and everything of this phone it is really nice phone