1. The USB Charging Port Board (Dock Flex)
This is a small sub-board located at the bottom of the device.
- What it includes: The Micro-USB port, headphone jack, microphone, and signal connections.
- When to replace: If your phone won’t charge, has a loose charging wire, isn’t recognized by a computer, or the microphone/headphone jack has stopped working.
- Key Tip: Look for variants that specify “With IC” or “Original”. Cheaper replicas lack the necessary IC chips, which can lead to slow charging or poor network signal reception.




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