Nokia 105 | Rm 908 Usb Pinout
The Nokia 105 RM-908 does not have a standard USB port for data or flashing; instead, it uses an FBUS interface located under the battery. To connect it via USB for flashing or unlocking, you must use a specialized FBUS cable or solder a modified USB cable directly to the motherboard's test points. FBUS / USB Flashing Pinout
The RM-908's programming interface consists of five primary points typically found near the SIM tray or under the battery: GND: Ground (Negative) TXDO: Transmit Data Output VPP: Flash Programming Voltage RX: Receive Data TX: Transmit Data
For flashing without an FBUS box, technicians often use a USB-to-Serial adapter (like a PL2303 or FTDI) to bridge these points to a computer's USB port. Charging Pinout & Solution
If you are looking for charging repairs, the device uses a standard 2.0mm Nokia "pin" charger port. If the port is damaged, "jumper ways" can be used to bypass the internal charging IC and connect the positive charger terminal directly to the battery's positive path through a diode or resistor.
Are you trying to flash the firmware or fix a charging issue? Nokia 105 RM-908 FBUS Pinout Diagram - GSMFixer
Nokia 105 (RM-908) uses a specific USB pinout on the motherboard to facilitate charging and data connections for flashing or repairing the device. Since this model typically features a micro-USB port, identifying the correct jumper points is essential for hardware-level fixes. USB Pinout and Charging Configuration
The following pinout configuration is standard for the RM-908 motherboard: VCC (5V+):
Found on a larger yellow pad, typically used for the primary charging input. Data+ (D+): Indicated by the connection point. Data- (D-): Indicated by the connection point. Ground (GND): on the circuit board for grounding the connection. Common Hardware Solutions
Repairing the Nokia 105 RM-908 often involves tracing these connections from the USB port area to their designated pads on the motherboard using red trace lines for visual guidance. Flashing and Unlocking:
Because the RM-908 lacks external storage or Bluetooth, firmware resets or unlocking often require a box flash interface or specific USB pinouts to communicate with repair tools like Infinity-Box Charging Issues:
If the device fails to charge, technicians use these pinouts to create "jumpers" (bypass wires) from the charging port to the VCC and GND pads. Security Reset: While the default security code is Nokia 105 Rm 908 Usb Pinout
1. Physical Connectors on Nokia 105 (RM-908)
The phone has two separate physical interfaces:
| Connector | Type | Purpose | |-----------|------|---------| | Bottom center | Nokia 2mm DC barrel jack (round) | Charging only (5V DC) | | Inside, under battery | 6-pin test point array | USB data (factory / flashing) |
There is no micro-USB or mini-USB port on the outside for data sync.
DIY Charging Cable Pinout
If you need to create a repair or test cable:
Micro-USB Male Connector (facing up, contacts visible):┌─────────────┐ │ 1 2 3 4 5│ └─────────────┘Connect: Pin 1 (VBUS) → Red wire → +5V from USB host Pin 5 (GND) → Black wire → USB GND
Leave pins 2,3,4 unconnected.
1. Executive Summary
This report details the hardware pinout configuration required to establish a USB connection for the Nokia 105, model designation RM-908. This specific model utilizes a proprietary pad layout on the main PCB (Printed Circuit Board) for flashing, servicing, and data transfer. Accessing these pins requires opening the device casing, as the standard consumer interface does not utilize a traditional USB port.
Q: Why does my PC recognize a “Nokia USB Device” sometimes?
A: If you short D+ and D- together or apply 5V to them, the phone can enter “test mode” – but no user data is accessible. It’s a diagnostic state only.
7. Pinout Summary Table (Quick Reference)
| 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) | The Nokia 105 RM-908 does not have a
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.
Nokia 105 RM 908 USB Pinout
The Nokia 105 (RM 908) is a popular feature phone that was released in 2015. While it's a basic device, it still requires a USB connection for data transfer, charging, and other purposes. In this article, we'll provide the USB pinout for the Nokia 105 RM 908, which can be useful for developers, technicians, and enthusiasts.
What is a USB Pinout?
A USB pinout refers to the arrangement of pins within a USB connector. It's essential for understanding how to connect a device to a computer or other USB-enabled devices. The USB pinout for the Nokia 105 RM 908 is a crucial piece of information for those who want to flash the device, transfer data, or develop custom applications.
Nokia 105 RM 908 USB Pinout
The Nokia 105 RM 908 uses a micro-USB connector, which is a common connector type for many mobile devices. The USB pinout for the device is as follows:
| Pin Number | Signal Name | Description | | --- | --- | --- | | 1 | VBUS | USB power supply (+5V) | | 2 | D- | USB data - | | 3 | D+ | USB data + | | 4 | GND | Ground |
Micro-USB Connector Pinout Diagram
Here is a simple diagram illustrating the micro-USB connector pinout: DIY Charging Cable Pinout If you need to
+---------------+
| 1 | 2 | 3 | 4 |
+---------------+
| VBUS | D- | D+ | GND |
+---------------+
Uses of the Nokia 105 RM 908 USB Pinout
The USB pinout for the Nokia 105 RM 908 can be used for various purposes, including:
- Flashing the device: Developers and technicians can use the USB pinout to flash the device with custom firmware or software.
- Data transfer: The USB pinout can be used to transfer data between the device and a computer.
- Charging: The USB pinout can be used to charge the device from a computer or a USB charger.
- Custom applications: Developers can use the USB pinout to develop custom applications that interact with the device.
Conclusion
In conclusion, the Nokia 105 RM 908 USB pinout is an essential piece of information for developers, technicians, and enthusiasts. The micro-USB connector pinout diagram and table provided in this article can be used for various purposes, including flashing the device, data transfer, charging, and custom applications.
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
