OPPO A31 (2020) Charging Port Dock Board Replacement
The charging board for the OPPO A31 (2020) is a critical sub-board component located at the bottom of the device. It handles not only power delivery but also integrates several peripheral functions essential for daily use.
This high-quality replacement module is designed for the CPH2015, CPH2073, and CPH2081 models. It is a "plug-and-play" solution that restores the connection between your Micro-USB cable and the motherboard, ensuring efficient current flow and data synchronization.
| Feature | Description |
| Compatible Model | OPPO A31 (2020) / OPPO A8 |
| Model Numbers | CPH2015, CPH2073, CPH2081, PCHM10, PCHT10 |
| Connector Type | Micro-USB 2.0 |
| Integrated Components | Charging Port, Microphone, Headphone Jack (3.5mm), Antenna Signal Connector |
| Material | High-grade PCB (Printed Circuit Board) with gold-plated contacts |
| Functionality | Battery Charging, Data Sync, Voice Call Audio (Mic), Wired Audio Output |
| Installation Type | Flex Cable Ribbon Connector (Snap-on) |
| Condition | New / Replacement Grade |
1. High-Performance Micro-USB Port
The board features a reinforced Micro-USB socket designed to withstand thousands of plug-in cycles. The internal pins are precision-aligned to prevent "loose charging" issues and ensure stable data transfer speeds when connected to a PC.
2. Integrated Primary Microphone
Located on the edge of the board, the MEMS (Micro-Electromechanical System) microphone is responsible for capturing your voice during standard phone calls. Replacing the entire board is the most effective way to fix "low volume" or "no sound" issues reported by callers.
3. 3.5mm Audio Jack Assembly
Unlike newer flagships, the OPPO A31 (2020) retains the headphone jack. This module includes the jack housing, ensuring a tight fit for your aux cables and headphones without static or channel dropping.
4. Network Signal Stability
The board includes the terminal for the coaxial antenna cable. A high-quality board ensures that your 4G/LTE and Wi-Fi signals remain strong by maintaining a low-impedance ground connection to the phone's frame.


