My phone keeps getting stuck in the Samsung logo. It begins by losing all sound and the screen keeps flickering when I touch the softkeys. On restarting it never goes past the Samsung logo. Anyone with a permanent solution to the problem? I've taken it to the Samsung dealer in Kenya and they have no solution. They finally asked me to replace the motherboard which costs as much as buying a new phone. The phone is meticulously maintained. Never ever dropped or mishandled.