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Realme 5Pro CHARGING FLEX
The Realme 5 Pro (RMX1971) Charging Flex, also known as the Sub-PCB or Charging Dock Assembly, is a vital internal component that manages the power entry and signal distribution for the device. Because the Realme 5 Pro supports VOOC Flash Charge 3.0, this board is specifically engineered with thicker power traces and safety ICs to handle high-current charging safely.
Below is the exhaustive technical product description and specification breakdown in a tabular format.
Product Overview: Realme 5 Pro Charging Board
| Feature | Detailed Specification |
| Compatible Model | Realme 5 Pro (RMX1971, RMX1973) |
| Component Type | Sub-PCB / Charging Connector Flex Board |
| Connector Interface | USB Type-C (High-durability 24-pin design) |
| Fast Charge Support | VOOC 3.0 Flash Charge (5V/4A, 20W) |
| Integrated Hardware | USB-C Port, Primary Microphone, Antenna RF Connector, Audio IC Path |
| Main Functions | Fast Charging, High-Speed Data Sync, Calling Voice Input, Signal Bridge |
| Material | High-density Multilayer PCB with Gold-plated contact pads |
| Connection Method | Board-to-Board (BTB) Snap connector for Main Ribbon Flex |
| Safety Features | Overcurrent Protection (OCP), Overvoltage Protection (OVP) |
Core Component Breakdown
1. VOOC-Compatible USB Type-C Port
The port is designed to handle the high 4A current required for VOOC charging. Standard boards often fail to trigger "Flash Charge" mode, but a high-quality Realme 5 Pro flex includes the necessary ID resistors to communicate with the original Realme 20W power adapter.
2. Digital Voice Microphone
The primary call microphone is pre-soldered onto this board. It is specifically positioned to align with the bottom chassis hole. If your voice sounds muffled or callers can't hear you at all, replacing this board is the standard hardware fix.
3. Antenna Signal Terminal
The small gold-plated circular terminal connects to the coaxial antenna cable. This is responsible for your 4G LTE/VoLTE network bars. High-quality boards feature full IC chips to ensure there is no signal loss or "Searching" errors after repair.
Comparison: Premium vs. Standard Market Copy
| Feature | Premium (Original Quality) | Low-Grade Copy |
| Charging Speed | VOOC Flash Charge 3.0 Supported | Standard slow charging only (5V/1A) |
| Network Signal | Includes signal boosting ICs | Often missing ICs; causes weak signal |
| Microphone | HD Voice clarity | Muffled audio or background hiss |
| Build Quality | Precision thickness; fits housing perfectly | Often too thick; may damage the screen |
| Data Transfer | High-speed USB 2.0/3.0 Sync | Charging only; no PC connection |
| Weight |
0.007 |
|---|
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