How to set automatic stop charging for iPhone 12:
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1. Unlock the iphone desktop, find the Settings in the desktop, and enter the Settings interface.
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2. In the Settings screen, click the battery option.
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3. In the battery interface, click to find the battery health option.
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4. In the home page of Battery Health, click the optimized battery charging option and turn on the optimized battery charging function to automatically power off after the phone is fully charged.
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5, iOS7 or above system of Apple mobile phone will automatically power off after full charge