Physical drops or internal wear can result in broken "ways" or signal lines on the PCB.
This paper describes the keypad matrix (keypad ways) for the Nokia 105 RM-908, methods to diagnose common keypad faults, step-by-step repair procedures, and recommended testing practices. It targets mobile repair technicians and electronics students. nokia 105 rm 908 keypad ways
In the Nokia 105 RM-908, the keypad lines often run through protective components (EMI filters) or directly to the CPU. If these filters get damaged due to voltage spikes or water, the keys stop working. Physical drops or internal wear can result in
Here is a comprehensive guide on troubleshooting and repairing Nokia 105 RM-908 keypad problems. In the Nokia 105 RM-908, the keypad lines
If you need a of the keypad matrix or help mapping specific buttons, let me know — I can describe how to extract the row/column layout from your actual phone PCB step by step.
If a series resistor is found to be open-circuit (shows GR on one side but not the other), you can sometimes "short" or bridge the resistor to restore the path.