Samsung Galaxy j7(2016) is a good phone, is powered by 1.6GHz octa -core and comes with 2GB of ram, I think this is due to app or software.Only in factory data reset condition without installing any app it changes normally.This phone pack 16GB of internal storage that can be up to 128 GB via micro SD card.Camera image quality is very good and sounds quality is due to poor.this phone supported LTE, Wcdma, gsm, This company is among the biggest players in smartphone market in the world.j7 set is very smoth to operate, both the camera, processor, batter backup wanderful, good worth of money.Only set back is set, this set is too much heating problem, After 5-6 minutes continuos opearation, the set will start heating