Symptoms of a Failing Charging Flex
If your phone exhibits any of these behaviors, replacing this flex ribbon will likely fix the problem:
- Intermittent charging or complete failure to recognize the Type-C cable.
- Loss of 45W fast-charging capabilities while slowing down to standard USB speeds.
- People cannot hear you during calls due to a damaged integrated microphone module.
- Data syncing failure when plugged directly into a computer.
Crucial Repair Precautions
- Verify Model Numbers: Ensure your phone is the KM7 variant. The non-Plus variant (Spark 40 Pro / KM6) utilizes a different interior footprint that will not align correctly.
- Don’t Forget the Main Flex: The sub-board connects to the phone’s upper system using a main ribbon. If your port is visually pristine but charging still fails, you may need a Main Motherboard Interconnect Flex instead.
- Safe Installation: Discharge your battery below 25% before opening the chassis to minimize thermal risks during the replacement.
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