On-Board Components
The small circuit board houses several integrated parts:
- USB Type-C Port: Manages power delivery (supports Vivo’s 18W Fast Charging) and data synchronization with computers.
- Primary Microphone: Captures your voice during regular phone calls and audio recordings.
- 3.5mm Headphone Jack: Connects wired audio devices.
- Antenna Signal Contacts: Bridges the cellular and Wi-Fi coaxial cables to the lower antenna system.
- Main Ribbon Connector: The multi-pin slot where the main flex cable links this sub-board to the top motherboard.



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