Samsung galaxy j2 is just ok mobile at this price range. the main part of a mobile is its battery is very poor and this samsung galaxy j2.Am using this from nine months. and honestly it doesn’t hv any hanging or lagging problems. the only cons that I found are.only loudspeaker output is low . even lower then my iphone 4s .it takes a lot of time to charge( about 2 hrs or even more) battery backup is good, voice clearity is nice, everything else is fine.