A phone that will not charge feels like an emergency. Most of the time it is a cable, a dirty port or a glitch. Apple recommends trying these steps in order, testing again after each one.
The steps, in order
- Try a different power source. Apple lists a computer, a power accessory or a wall outlet.
- Restart your iPhone.
- Check the cable and adapter for damage, such as breaks or bent prongs. Apple says not to use damaged accessories.
- Use a wall outlet and check that all connections are firm, or try another outlet.
- Clear debris from the charging port at the bottom of the phone, then plug the cable in firmly.
- Charge for half an hour.
- Force restart if the phone still will not power on or shows a battery icon. On iPhone 8 or later and iPhone SE (2nd generation and later): press and quickly release Volume Up, press and quickly release Volume Down, then hold the side button until the Apple logo appears.
- Charge another half hour. If it still does not turn on or charge, Apple says you might need service.
“Accessory Not Supported or Certified” alert
Apple’s fixes: connect directly to the charger without adapters in between, clear debris from the port, restart, try a different USB cable or charger, and update iOS. Apple says the alert can appear if the port is dirty or damaged, the accessory is defective, or the USB charger is not designed to charge devices.
Charging but stuck at 80 percent?
That is a different issue and often normal. See why an iPhone stops charging at 80%.
When to get service
If nothing works after a full charging attempt with a known-good cable and outlet, the phone or battery may need service.
Frequently asked questions
How do I clean the charging port?
Apple says to remove debris from the port. Avoid pushing sharp metal objects into it.
Is wireless charging a workaround?
It can help you tell whether the port is the problem, though Apple’s page focuses on the wired steps above.
Sources
Last checked November 3, 2026. Apple changes its instructions between updates, so if a menu looks different on your Mac, check the linked Apple page.
