VIVO Y21 2020 OG CHARGING Board

The Vivo Y21 (2020/2021) Original (OG) Charging Board, frequently referred to as the Sub-PCB or CC Patta, is the core module responsible for power intake, audio input, and cellular signal bridging. The Vivo Y21 series is a major transition point for the Y-series, moving to high-speed USB Type-C architecture while maintaining a slim form factor.

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

1. 18W Fast Charge Optimized Port

The Vivo Y21 utilizes an 18W fast-charging system. The OG charging board features reinforced internal power pins to handle the higher amperage without overheating. Unlike generic copies, the OG board includes Full IC Protection, ensuring the "Fast Charging" animation triggers correctly when using the original Vivo FlashCharger.

2. High-Sensitivity Microphone

This module contains the phone's primary voice microphone. It is engineered with noise-reduction capabilities specifically for Vivo’s Funtouch OS environment. If you experience call quality issues where you sound distant or muffled, this board is the primary component requiring replacement.

3. Signal Reception Hub

The board features a gold-plated RF Coaxial Connector for the antenna cable. Because the Y21 features a slim 8.0mm design, the antenna placement is critical. The OG board ensures zero dB loss in signal strength, preventing "No Service" or weak 4G/VoLTE reception issues.