I have purchased Videocon Z - 40 mobile at least 6 months ago from the amazone site. It has a many problems in this mobile. After two months it gives problems with the battery. It suddenly switch off and when battery shows 50%+ battery it suddenly switch off . when I have come a call it suddenly switch off and not shown whose call me. I am going to the Service centre of the Videocon, but they could not solve the problem. I am disappointed by the phone. I suggested to all viewers to not to purchase this phone,