When the health is lower than 80%, the system will forcibly turn on the hail energy management function, and the mobile phone will get stuck in some cases. Only by replacing the battery can this restriction be lifted. The loss of the battery under normal use, the health of the battery is less than 80%. Generally, after charging the iPhone for more than 500 times, that is, after using the iPhone for about 14- 18 months, the battery life will be reduced and the capacity will reach about 80%. It is recommended to change the battery. Because Apple takes 80% as the threshold, if it is lower than 80%, the system will forcibly turn on the performance management function, and the mobile phone will be stuck. It is recommended to replace the battery.
If your mobile phone is under warranty or AppleCare+ service plan, you can enjoy the service of replacing the battery for free. If your mobile phone doesn't have AC+ and is not under warranty, you need to charge 5 13 yuan for replacing the full-screen iPhone. The previous iPhone model cost 359 yuan. Although the domestic battery is relatively cheap and it is relatively simple to replace the battery, it is recommended to buy the original iPhone battery at Apple's after-sales point when replacing it, which is safer.