I am use this phone its very smooth the operating system.it has 7.0 processer.i like its gameing proformance very nice. Its sounds as like as Dolby atoms sounds but it has one speaker. sound quality really good. one things I dont like his battery back up.very fast charging and very fast lost the battery. It has take parfect selfie.Screen is gorilla glass 3 its pretty good and its rom is 3 gb and 32 gb internal.phone performance is very good but battery back up is very poor. So all over this product is very good quality and performance very good.i told you its a best selfie phone ever.