I brought it 1 year ago and the phone is so handy.OS is awsome.It is a dual sim phone and supported 4g and It has 1 gb ram with 8 gb internal memory .256gb external memory supported. I like it very much.its camera is 5 megapixel with flash but front camera has no flash.Samsung j2 has super ammoled screne.It has some extra features like S bike mode, ultra saving mode and device maintenance.