Veru very very worst phone ever alwaya hang no updates no 3g support low battery backup always saying this app has stopped working old style and worst phone takes more time to open app no support of samsung battery problem its early discharge it is not 3g smartphone how do I remove block mode clean always camera is good bad battery condition but camera os very good quality. It is having hanging problem some time and ram is very low, but it is really having good camera phone like it having 5mp. Samsung had made their worst phone ever.