iPhone 12 and later: Troubleshooting Quick Checks
Troubleshooting quick checks for all issues
Ensure that a protective film, case, glove, or stylus aren’t causing interference. Touch the screen with your finger pads, not your fingernails.
Clean the display with a soft, slightly damp, lint-free cloth.
Important: Unplug all cables and turn off the iPhone first. Don't use products containing bleach or hydrogen peroxide. Avoid getting moisture in openings, and don't submerge the iPhone in any cleaning agents. Don't use compressed air.
Use a compatible charging cable to plug the iPhone into a power adapter that’s connected to an electrical outlet. Don’t use a computer port or wireless charging. Charge the iPhone for at least 10 minutes. Wait until an image appears on the screen or 10 minutes have elapsed.
Note: The iPhone may have entered a deep discharge state that requires 20 to 30 minutes of charging to turn on. The charging icon should be visible after two minutes of charging.
Restart the iPhone. If the iPhone doesn’t restart, try to force restart the iPhone.
More resources
General
Power and Startup
Wi-Fi and Bluetooth
Restore
Note: Following these procedures may result in data loss.
If you see an error when you update or restore your iPhone, iPad, or iPod
If you see error 9, 4005, 4013, or 4014 when you restore your iPhone, iPad, or iPod touch