Put the phone back together and test all keys. Conclusion
Disclaimer: Repairing mobile phones requires technical skill. Improper handling can cause permanent damage to the motherboard. If you'd like to narrow down the problem, tell me: are not working? Did the issue happen after water damage or a drop ? nokia 105 rm 908 keypad ways
In rare instances, excessive drops cause the MediaTek processor to lose connection with the keypad traces. Phase 1: Preliminary Cleaning and Software Reset Put the phone back together and test all keys
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. nokia 105 rm 908 keypad ways