I give it 5 star because I am 100% satisfied with this Smartphone. It never make my priority down in front of my friends which have competition between me. Its nice selfie camera is like a Selfie master with Front led flash and Rear camera is mini DSLR. I use to play big android games it never hang in hand. Even my friends ask me did I use any technical hack with this device, always smile and say No its power of SAMSUNG. He surprises and argue me that I am telling lie then I give him my phone and say look its all features and tell is there any Hack option or not? The main is that I know about that what is it and what quality of product is this. I like Samsung service It never say no or tell any excuse.