Solder the new port, ensuring the VBUS and GND pins are securely fastened. 2. Charging Vias Ripped Off (Jumper Needed)
If you are dealing with a "charging not supported" error on the RM-908, it is usually due to a malfunctioning line, which requires servicing the battery connector pads.
The Micro-USB port on the RM-908 follows the standard 5-pin configuration used for mobile charging and basic data functions. When the phone is viewed with the port facing you (and the wider side of the trapezoid at the bottom), the pins are ordered : Pin Number Description Pin 1 VCC / VBUS +5V Power Supply for charging. Pin 2 Data - (D-) Negative data line (often used for software flashing). Pin 3 Data + (D+) Positive data line. Pin 4 ID Typically not connected (NC) on this model. Pin 5 GND Ground / Negative terminal. Common Repair Scenarios
If your Nokia 105 isn't charging, the issue is usually a broken solder joint on Pin 1 or Pin 5. Hardware Jumper Solution Nokia 105 Rm 908 Usb Pinout
For firmware flashing or unbricking, professionals usually use the internal pads located under the battery rather than the USB port itself. The 5-Pin USB Pinout Diagram
Download and install the latest MTK USB VCOM Drivers on your Windows PC. This allows the system to recognize the phone's custom serial interface.
is a relic of a time when phones were built to be simple, and "connecting to USB" meant taking the whole thing apart. Solder the new port, ensuring the VBUS and
A sacrificial, standard USB-A cable to strip down for parts.
Apply flux to the charging port pads on the PCB. Solder the ground (outer shell) and the positive pin securely.
Your public links are automatically deleted after 13 months. If you delete a link, you'll still have access to the thread in your AI Mode history. Learn more Delete all public links? The Micro-USB port on the RM-908 follows the
Connect to any gold-plated ground shielding on the board. Data and Flashing
If the phone isn't "saving" the charge, it might be a clogged port. A quick clean with a toothbrush and isopropyl alcohol can often fix a "no-charging" issue without soldering.
| Pin | Signal | Function | Wire Color (typical) | |-----|--------|----------|----------------------| | 1 | VBUS | +5V Charging Power | Red | | 2 | D- | Data Minus (unused in this model) | White | | 3 | D+ | Data Plus (unused in this model) | Green | | 4 | ID | For OTG (not supported) / sometimes used for charging mode detection | None (or tied to GND via resistor) | | 5 | GND | Ground | Black |
Are you trying to or fix a charging issue ? Nokia 105 RM-908 FBUS Pinout Diagram - GSMFixer