To extend the battery life of your phone , the method was there. Since the Apple mobile phone uses a lithium battery, it is necessary to charge the mobile phone battery in time when it is used quickly (less than 15% remaining). If the phone is not used for a long time, always charge it to avoid the battery life of the phone.
In the process of charging, it is best to keep the phone off, and the battery is damaged when it is turned on. Also, don't charge in an environment where the voltage is unstable, too cold or too hot.
Apple mobile phone battery life calculation
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