Use "camera MX".in this you have moving pic. like iPhone .where on touching the pics they move. I have so much fun with this app on this phone
its performance is satisfactory but battery drains very fast while using net/WI-fI.
One more problem is about notification is not displayed when the screen is locked/off. It is showing too much space running low.
.all files automatically goes in its internal memory
Galaxy J2 doesnt have backbit captive button.Sammy doesnt include it but instead replace by chrome finish back and recent button.they do this so this phone didnt get pricey. You can also check the specification