Samsung galaxy J7-6 is a bad phone.Operating system Android OS lollipop.processor 1.6ghz.Ram 2GB and memory 16GB.price is very bad 15, 590.battery back upis not good 3300mah.no fingerprint sensor.batery life is not good.heavy weight 170gm.s amsung galaxy J7-6 talk time upto 23hrs( 3G) .stand by time upto 96hrs .Very bad .price is very high budget.camera is 13/5mega pixels.it is not good.camera quality is bad for price 15590.s creen resolution is 5.5 inches screen.Expandable memory is bad 128 GB.