Sumsung j2 impress mobile 4g jio sim 1 GB ram my experience about sumsung j2 very much impressutive flash camera andriod 5.1. Lolly pop so we can tell sumsung j2 intresting device front camera settings of sumsung that will be hang some times but I am happy about sumsung j2 and the battery of mobile sumsung 2000 mah thank for making sumsung mobile please make more mobile