I have bought the j7 phone in march and now it is about to 7 months have past and the performance of this phone is really exxellent.I have heard from my neighbours and my friends that samsung phones are use too hang but there is no problem in this phone till now and its ram is so high and it is very big phone.and its camera is superb too.my friends use too click their pictures from my phone.its inbuilt apps are so good and both the sensors are properly working .its video features are too gud and I can see hd videos and movies very clearly and easily.and at last I would like to say that everyone who is thinking to purchase the phone should prefer samsung j7 phone.