1. If the iPhone has a thick protective case, metal protective case, or battery case, it may not charge or charge slowly, please try to remove the protective case first.
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2. Your iPhone may heat up a bit while charging. To extend battery life, if the battery overheats, the software may limit charging when it reaches 80%. When the temperature drops, the iPhone charges again. Try moving your iPhone and charger to a cooler location.
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If you use your phone while wireless charging, it is recommended to stop using your phone temporarily due to the possibility of position shifting, which may cause suspension of charging or the phone becoming hotter.
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3. Check whether the Optimize Battery charging function is enabled. When Optimized Battery Charging is enabled, a notification appears on the iPhone lock screen indicating when the iPhone will be fully charged. If you need to fully charge your iPhone as soon as possible, hold down the notification and tap \"Charge Now.\"
The reason why the charge to 80 does not move is that Apple's new system protects the battery, and the battery will be stuck at 80 in the case of delayed high temperature.
Usually the reason for this situation is to play with the phone while charging, the next time you try to charge to 80, the phone lock screen is placed for ten minutes, the power can continue to use after 81, but the charging speed will be very slow.
It should be that the wireless charging of the Apple phone is faulty, it is recommended to restart the device and then reconnect the wireless charging to try.