Disclaimer: This guide is for professional use. Attempting board-level repairs without proper tools or experience may permanently damage the device.
By: Repair Tech Desk
In mobile phone repairing jargon, a "Keypad Way" refers to the thin, hair-like copper tracks that run from the keypad’s carbon contact pads to the processor (BBIC) or the keypad IC. Understanding these paths is critical for diagnosing and fixing dead-key issues. Unlike smartphones that use capacitive touch, the Nokia 105 uses a physical carbon-pad matrix. When you press a button, the carbon pill bridges two interlocking traces on the flexible PCB (FPCB) or the main board. This creates a voltage drop or short circuit that the processor recognizes as a specific keystroke. Nokia 105 Rm 908 Keypad Ways
