I have used pesionaly InFocus turbo 5 mobile.in which main quality of battery back up in which 5000 mah power battery is postive point of this mobile.9-12 working hour online use for movies audio vedio music & games used really battery is strong.all other mobile not compare to this mobile battery.other second nagative parts of this mobile I have main faces my all friends mobile.the touch is not propery working.for this mobile use extra soft key software downloaded on this mobile.