As always there are many problems with samsung brand in mobile phones. This phone have also many problems with it. In j7 there is only 1.5gb ram which is the main problem for hanging. Its sound quality is very bad we cannot listen its ringtone for attending calls which creates a lot of problem for the buyer. The update also comes very late which create hanging problem too. The camera quality is also not good. It is having a plastic body so there is lot of chances of breaking which is not good for the buyer. According to the price it does not satisfy the buyer.
So from my side dont opt this inplace of it you can go for other brands such as mi, sony etc.which will provide you a good features.