I cant explain more about of this product because I did not use this mobile and there specification of this- 1. technology is gsm/cdma.
mamory upto 32 gb and 2 gb ram, camera is 13 MP also 2.4 mp front camer and battery abchup is 3000 mah, .
To buy this mobile I saw many where that this all feature is not good and also hardware and software is very bad. It may be just dirty, or it may be scratched. The sapphire glass covering the back camera is usually fine,