Nokia 105 Rm 908 Usb Pinout
If you are simply trying to repair the charging port (to charge the battery) and not connect to a PC, you do not need the data pins. You only need to solder a new Micro-USB or USB-C female port to the VBUS and GND legs of the original charging connector block on the bottom of the phone.
The Nokia 105 (Model RM-908) is a classic 2G feature phone originally released in 2013. Unlike modern iterations that use USB-C, this specific model features a Micro-USB port located at the top of the device for charging. USB Pinout Overview
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 1 to 5 from left to right: 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
Charging Issues: If the device shows it is charging but the battery level does not increase, it may require a "charging jumper" to bypass damaged motherboard traces.
Flashing & Unlocking: For technical repairs like software flashing or bypassing a forgotten security code (default is 12345), the D+ and D- lines must be functional to allow communication with repair software.
Replacement: If the physical port is damaged, it can be replaced by soldering a new standard Micro-USB Type-B jack onto the PCB. Technical Tips
ESD Safety: When opening the device for pinout repairs, ensure you use proper ESD protection to avoid damaging sensitive electronic components.
Battery Contacts: The RM-908 uses a removable battery (typically 800mAh) that connects via three metallic pins on the motherboard. Ensure these are clean if the device fails to power on after a USB repair.
For visual diagrams and step-by-step soldering guides, reputable mobile repair communities like Mobile Master Prince Mobile Lab or iFixit often provide specific "charging way" schematics for this model. Nokia 150 (2023) user guide: Keys and parts - HMD
(specifically the model) is a classic feature phone released in 2013. Unlike modern iterations of the Nokia 105 that feature standard micro-USB or USB-C ports, the original Nokia 105 Rm 908 Usb Pinout
relies on a proprietary 2.0 mm charging pin and does not have an external USB port for data transfer or flashing.
To perform data-related tasks like firmware flashing or security code bypassing, technicians must use internal USB pinouts located on the phone's Printed Circuit Board (PCB). Core Components of the Pinout Because the
lacks a standard USB interface, "pinout" refers to specific test points (jumpers) on the motherboard. For communication with a PC, a modified USB cable or a specialized interface box (like Advance Turbo Flasher) is used. The standard pinout for this model typically follows a 4-wire configuration:
VCC/VBUS (+5V): The power supply line, typically connected to the battery positive terminal or a dedicated power test point.
GND: The ground connection, which can be any metal shielding or the battery negative terminal.
Data+ (D+) and Data- (D-): These are the critical communication lines. In the RM-908, these points are often found near the CPU or charging port area on the PCB. Technical Applications
Connecting to these pinouts is primarily done for two reasons:
Charging Repair: If the 2.0 mm pin connector is damaged, technicians use these pinouts to "jump" the power connection directly to the board. Software Servicing: The
frequently requires a "Hard Reset" via flashing if the security code (default 12345) is lost and the manual battery-drain method fails. Safety and Requirements If you are simply trying to repair the
Qualified Service: HMD and Microsoft (former owners of the Nokia brand) emphasize that hardware-level repairs should only be performed by qualified personnel to avoid permanent electrical damage.
Software Tools: Successful connection via pinout usually requires the Nokia Connectivity Cable Driver or Nokia PC Suite to ensure the computer recognizes the device as a COM port.
For users with modern versions of the Nokia 105 (such as the TA-1465 or 4G models), the process is simplified as they include a functional micro-USB port that supports both charging and direct data connection to a PC.
Nokia 105 (RM-908) holds a unique place in mobile history as one of the last bastions of ultra-simple, durable feature phones. Released in 2013, it was designed for basic utility, yet it became a favorite for hardware enthusiasts and repair technicians due to its straightforward internal architecture. The Story of the RM-908 Pinout
For many, the "story" of the Nokia 105 RM-908 USB pinout isn't just about technical specs; it’s about the DIY repair culture that kept these devices alive long after their official support ended.
While modern smartphones use standardized USB ports for everything, the original Go to product viewer dialog for this item.
was often modified by technicians to troubleshoot "dead" units or bypass broken charging ports Key Technical Details
The RM-908 version is a 2G-only device known for its 800mAh battery and 1.45-inch screen. In the world of hardware repair, understanding its pinout is essential for: Nokia 105 (2013) Mic Repair Tutorial 1 Dec 2023 —
| Interface | Pin | Signal | |-----------|-----|--------| | DC jack | Center | +5V charging | | DC jack | Sleeve | GND | | TP1 | — | USB_D+ | | TP2 | — | USB_D- | | TP3 | — | VBUS (enable USB) | | TP4 | — | GND (USB) | | Interface | Pin | Signal | |-----------|-----|--------|
If you need the exact test point coordinates on the PCB or high-resolution photo of their location on RM-908, let me know and I can describe the visual layout in detail.
If you need to recover data or flash a Nokia 105 RM-908, do not rely on the USB port for anything other than charging. Use a dedicated hardware flasher with test points. For charging cable repair, only VBUS and GND are required.
| Aspect | Detail | |--------|--------| | Data transfer | No mass storage mode; only low-level flashing | | Charge via USB | Possible if you connect 5V to DC jack or to TP3+TP4 (not recommended) | | Cable availability | Pre-made "Nokia USB cable for RM-908" does not exist — DIY only | | Risk | Soldering to test points can short and damage phone |
A: Check the 10kΩ resistor between pin 4 (ID) and ground. It may be damaged. Also verify the charging IC (usually a small 6-pin IC near the USB port) is getting VBUS.
Below is the standard pinout for the micro-USB connector used on the Nokia 105 (RM-908). This applies to the phone’s charging/data port wiring where the micro‑USB connector is exposed on the PCB.
Pin assignments (micro‑USB, looking into the plug with contacts up):
Notes and practical details:
If you want, I can: