Friends.
samsung guru music 2 sm b310-e.friends I told you that never buying this mobile because in this mobile many problems available.
battrey back up is notuch good, after full charge battrey working only some times.really its a worst mobile friends.
body metal plastic but not useful, many keypaids not perfectly works.its a expensive mobile but not useful.
its a useless phone friends.company customer services also that extremely too bad friends.