Hallo friends I have purchased this Karbonn mobile.First 6 month mobile works fine all things are working good. After 6 month problem comes with my mobile touch screen not working properly.I visited near Service centre they took around 1 month but mobile not comes from Main centre Ahmedabad to Surat.Then I try to Contact at Ahmedabad Venter but nobody receive my phone. Here Service centre closed due to end of contract.Finaly I go to Ahmedabad to receive my mobile.