my mobile karbonn k330. i purchased on 14.4.09. i faced lot of problems with that mobile. It's problems are less charging and signal problem. But i send it to service center, they were not find about the problem. They send the mobile to the company service center at hyderabad. They tell that there is a board problem in that mobile.I given the mobile to service is 10.8.09 but now onwards they dont response about my mobile.