Symptoms
- No charging indicator when plugged in
- Charging works with one cable but not another
- Port feels loose or the cable doesn't click in fully
- Charging stutters on and off
Likely causes
- CommonDebris or lint in the USB-C portPocket lint blocks the pins just as it does in older Lightning ports.
- CommonNon-compliant or damaged USB-C cableCheap or worn cables can fail to deliver a stable connection.
- PossibleUnderpowered or incompatible USB-C chargerSome third-party chargers don't negotiate power delivery correctly with iPhone.
- PossibleLiquid exposure triggering a charging warningiPhone will block charging and show a liquid-detected alert until the port fully dries.
- Less commonInternal port or logic board damagePhysical drops or prior liquid damage can damage the connector itself.
What to do
- Check for a liquid-detected warning on screen, which blocks charging until it clears.
- If liquid was detected, dry the phone port-down in a low-humidity area and wait before retrying, without adding heat or rice.
- Inspect the port with a flashlight for lint or debris and clean it gently with a dry brush.
- Try a different USB-C cable and a different adapter or USB port.
- Restart the phone to clear any stuck charging state.
- Check Settings for any charging-related alerts or messages.
- Test the phone's own cable and adapter on another USB-C device to confirm they work.
- If a confirmed-good cable and charger still don't charge the phone, the port likely needs inspection.
Tools and parts
- Flashlight
- Soft-bristled brush
USB-C to USB-C cable (USB-IF certified)Search: “certified USB-C cable for iPhone”
When to call a pro
If liquid was involved or the port shows physical damage, have it inspected by Apple or an authorized repair shop rather than forcing a charge.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.