Realme C20 / C21 OG Charging Board

The Realme C20 (RMX3063/RMX3061) and Realme C21 (RMX3201) utilize a shared internal Sub-PCB architecture. This Original (OG) Charging Board is the primary interface for power delivery and peripheral connectivity, specifically engineered to support the power requirements of the massive 5000mAh battery found in these models.

Below is the technical product description and comprehensive specification breakdown in a tabular format.

1. Reinforced Micro-USB 2.0 Port

The OG board features a high-tensile Micro-USB port with solid solder points to the PCB. Unlike standard copies that may easily break or offer loose connections, this original component is built to withstand thousands of plug-in/plug-out cycles while maintaining stable current flow to the battery.

2. Digital Analog Microphone

The primary call microphone is integrated directly onto this board. The OG version uses a high-sensitivity sensor that ensures clear voice capture for calls and recordings. Replacing a damaged board with a non-OG copy often results in muffled audio or a complete loss of outgoing voice.

3. Signal Reception Terminal (RF)

The board includes a precision gold-plated antenna socket. This terminal connects the coaxial cable from the mainboard to the bottom antenna. The OG quality ensures there is no signal attenuation, preserving full 4G LTE and VoLTE connectivity without the "Searching" or "Weak Signal" issues common in lower-grade parts.