MediaTek (MTK) MT6261D or Infoneon (depending on regional variant motherboard revision). Connection Type: F-Bus / UART test points interface.
If you are determined to proceed, here are some recommended actions:
The connection points are located on the main motherboard. You must identify the test points to solder or press probes against the board.
Find the nearest component (a small diode or resistor) on the circuit diagram that is connected to the VBUS line and run a jumper wire to the VBUS pin on the new charging port. 3. "Not Charging" Error Nokia 105 Rm 908 Usb Pinout
I can provide the exact software setup or jumper maps for your specific goal. Share public link
The RM-908 was designed primarily as a feature phone. While it contains a USB port, the standard firmware does not enable data transfer (e.g., no USB mass storage or PC Suite mode). However, the hardware traces exist.
Flashing a phone involves writing directly to its firmware. Any mistake during this process (e.g., using wrong files, improper setup) can permanently damage the phone, rendering it unusable. Proceed with caution and only if you are comfortable with such procedures. MediaTek (MTK) MT6261D or Infoneon (depending on regional
| Symptom | Likely Cause | Pinout Check | |---------|--------------|---------------| | No charging | Broken VBUS or GND trace | Measure continuity pin1 → charging IC | | PC not detecting phone | D+/D- not connected to CPU | Check series resistors (22Ω typical) | | Phone shows "USB connected" but no function | Firmware limitation | Not a pinout issue | | Overheating while charging | Short between VBUS and ID or GND | Inspect pin4 (ID) – should not be shorted to VBUS |
Interfacing with these tiny pads requires a steady hand and proper tools to prevent lifting the copper traces off the board. Tools Required Fine-tip soldering iron (regulated at 300°C–350°C) Thin enamel-coated copper wire or a stripped USB cable Rosin-core solder and soldering flux Tweezers and a magnifying glass or microscope Connection Process
The power supply line, typically connected to the battery positive terminal or a dedicated power test point. You must identify the test points to solder
In most phones, pin 4 (ID) is used to detect if a USB OTG cable is attached. In the Nokia 105 RM-908, pin 4 serves a different purpose: .
This is the round port visible on the bottom of the phone.