Nokia 105 Rm 908 Keypad Ways [upd] May 2026

Technical Service Report: Nokia 105 (RM-908) Keypad Ways & Troubleshooting

Device: Nokia 105 Model Code: RM-908 (Single SIM) Type: Feature Phone / Dumb Phone Issue Focus: Keypad Malfunction (Non-working keys, ghost touches, or complete keypad failure) Component Analyzed: Carbon contact keypad matrix and PCB (Printed Circuit Board) traces ("Ways")

Factory Reset: If the keys work but the phone is "stuck," use the hard reset code *#7370# (default security code is 12345). 2. Identifying Hardware Failures nokia 105 rm 908 keypad ways

Continuity map (CPU to keypad pad):
Trace each from CPU ball (e.g., MT6250 balls: A5=ROW0, B5=COL0, etc.) to the physical keypad contact. Technical Service Report: Nokia 105 (RM-908) Keypad Ways

Before performing hardware repairs, try these simpler solutions: Elastomer conductive pads Keypad PCB traces (ways) Flexible

IC Issues: Since the RM-908 uses a single integrated chip for keypad control, if tracing and jumping don't work, the CPU/IC may need to be re-balled or heated. Essential Keypad Shortcuts & Operations Key Combination Lock Keypad Select Go to > Lock keypad. Unlock Keypad Press the End key and select Unlock. Flashlight On From home screen, quickly press Scroll Up twice. Flashlight Off Press Scroll Up once. Switch Case Press # repeatedly to cycle through ABC, abc, and 123. Special Chars Press and hold *. Factory Reset Dial *#7370# (Default code: 12345). Nokia 105 (2023) User Guide - HMD

for a specific set of keys that aren't working on your device?

Verify Ground Resistance (GR): Check the center point of the button for a GR reading. If there is no reading, the line is likely broken between the pad and the CPU. Jumper Solutions & Repairs