Mobile was purchased on 08/06/2010.from New Delhi (India).Set became out of order. Set was handed over to authorised service stn. on march 2011 Defect rectified but reverse nob not rectified but anyhow I have managed through another nob I again approched Service centre for the repair of nob which was not rectified earlier.This time they said it is ok. I thought it is ok.;but not left the service stan. inside service stn. I discovered that besides nob now previous fault again appeared.My set is with the service stn since 18/06/2011.Now they are saying that set can not be rectified under the warranty.