| PA = "Power Amplifier". Located besids antana switch, marked as RMxxx (xxx is a type of PA e.g. RM009) with Rockwell log on it. Desolder it and your phone should start and find network, but it will be unable to make calls. About second one I don't have any idea. Is your battary made in China? Try to use 100% working battary from working t28.
WBR B0BA |