Key Component Details
- Primary Function: It acts as the charge control management unit and voltage regulator, ensuring safe, stable 5V power delivery and managing fast-charging capabilities.
- Compatible Devices:
- iPhone 14
- iPhone 14 Plus
- iPhone 14 Pro
- iPhone 14 Pro Max
- Package/Type: It is a BGA (Ball Grid Array) SMD micro-chip, heavily relied on by micro-soldering repair technicians.
Common Symptoms of a Faulty 338S00839 IC
If this chip is damaged on the motherboard, the iPhone will typically experience:
- No charging indicator when plugged into a lightning/USB-C cable.
- Fake charging (the battery icon shows it is charging, but the percentage drops or stays stuck).
- The phone failing to boot up or stuck on a dead battery loop.
- Sudden, severe overheating near the upper-middle section of the logic board during charge attempts.
- Primary power rails shorting out, drawing 0 amps or irregular current on a USB ammeteR.



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