Sony India — sony xperia j

Address:

Mumbai City, Maharashtra

The phone had been working fine. Never had a physical damage. Never had it been repaired. Nor did it ever get wet. Suddenly one fine day, the touch goes mad.acting like it has a ghost in it. Typing when I don't touch and not typing when there is an action performed. Warranty or not, is this how a device get possesed and then we are to dump it?