Samsung galaxy j1 ace has 1900mAh lion type battery its ram is 1Gb that is good for gaming and usings.its resloutions are 480×800 pixel and 5mp rear camera its means 720p resolution with 2.2 32 mm auto focus led bright flashlight and front camera is 2mp its supports 2G , 3G as well as 4G with wi-fi at last I want to say you that I have this phone and heartly I loved it once.thank you .