If the device is too hot or too cold, it will stop charging to protect the battery. While this doesn't usually stop the phone from charging entirely, it is a factor in overall battery performance.
Common iPhone 12 Charging Problems and How to Fix Them
Similarly, check the USB power adapter for cracks or burn marks. Move the phone to a cooler or warmer environment and try again once it reaches a moderate temperature.
The Lightning port is a common point of failure, especially if it has been subjected to dust, moisture, or physical damage. Inspect the metal connector for bends, debris, or damage.
Common iPhone 12 Charging Problems and Fixes
Ensure the connection is snug at both the phone and the power source. This guide walks through the specific reasons why this happens and provides actionable steps to restore power.
More About Why won't my iphone 12 charge
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