Yes. Use a multimeter in continuity mode while pressing keys. Probe from the keypad connector backward. For standard matrix, common ground is always present. Trace each line manually.
: To erase all data and restore factory settings, enter *#7370# on the home screen. nokia 105 rm 908 keypad ways
To identify the physical and electronic paths (referred to as "ways") of the keypad matrix on the Nokia 105 RM-908, and to provide diagnostic and repair solutions for common keypad-related failures. nokia 105 rm 908 keypad ways
Each button corresponds to a specific row and column intersection on the PCB. nokia 105 rm 908 keypad ways