I bought this mobile Samsung Galaxy J7 Prime 6 months ago and is working well. Sound quality is also fine. Very user friendly. It has advantage of finger print sensor to lock or unlock the phone. This mobile comes with 3GB ram & 32GB internal memory which is very sufficient. It has front camera of 8 MP and rear camera of 13MP. The camera quality is very good. Also it has 3300 mAh battery which is good. It has operating system of Android 6.0 marshmallow and 1.6 gHz Octa core processor. Overall a very nice product.