Quick Power Checklist:
- Try a different **MFi-Certified** cable and wall brick
- Clean the **Charging Port** (Pocket lint is the #1 cause)
- Force restart your iPhone to refresh the **Power Management** chip
- Check if the iPhone is **too hot** (Charging pauses during high temps)
Step-by-Step Charging Troubleshooting
1 Clear Debris from the Charging Port
Over time, pocket lint can get compressed inside the charging port and prevent the cable from seating properly. Use a wooden toothpick or plastic pick to gently remove debris from the bottom of the port. Avoid metal objects, as they can damage the delicate internal pins. Once the port is clear and the connector fits snugly again, charging should be restored.
2 Disable Charging Optimization
If your iPhone stops charging at 80%, it’s usually due to a built-in software feature rather than a fault. Go to Settings > Battery > Battery Health & Charging. Check whether Optimized Battery Charging or an 80% Limit is enabled. You can also turn off Clean Energy Charging if it’s active in your region and your iPhone is pausing charging during certain grid conditions.
3 Perform a Hard Force Restart
Sometimes the software process that manages power can hang. To fix this, quickly press Volume Up, then Volume Down, and hold the Side Button until the Apple logo appears. This forces a restart and can help the iPhone re-detect the power source, sometimes resolving “Accessory Not Supported” errors.
Why Won't It Charge?
- Liquid Detection: If the port is damp, iOS will disable charging to prevent a short circuit.
- Faulty Wall Adapter: A low-quality or damaged brick might not provide enough voltage to trigger the charge.
- Software Beta: Beta versions of iOS often have bugs related to power management.
- Broken Internal Pins: If the cable wiggles significantly, the internal charging module might be loose.
Pro Tips:
- The Computer Test: Plug your iPhone into a Mac or PC. If it charges there but not in the wall, your Wall Brick is faulty.
- Check for Heat: If your phone feels hot to the touch, take it out of the case and let it cool. iOS will not charge a battery above a certain temperature.
- Use Original Accessories: Non-MFi (Made for iPhone) cables often lack the authentication chip required to negotiate power safely.
Frequently Asked Questions
Is it safe to clean the port with alcohol?
Only use 99% isopropyl alcohol and apply a very small amount. Avoid using water or lower-concentration alcohol (such as 70%), as the higher water content may increase the risk of corrosion inside the port.
Why does my iPhone charge so slowly?
This is usually caused by using an older 5W adapter. Modern iPhones (iPhone 12 and later) are designed to work best with a 20W USB-C Power Delivery (PD) adapter for faster and more efficient charging.