Hi dear,s i was faced a water damage phone witch is nokia 2700c i inspect it deeply and after checking i found the betty is heating when i tried to power on the phone so i decided to change it with new one but not available in market i asked many friends of mine but not success. so i got a piece of 7210c with contec service and i changed betty from 7210s to 2700c after change not power on i also changed avilmas from 7210 to 2700 nokia after few tries mobile power on successfully.