Apple's official regulations
Apple officially stipulates that when the battery capacity of Apple's mobile phone is lower than 80%, the battery can be replaced for free. Specifically, if the battery power of the user's iPhone is less than 80%, and within the warranty period, the battery can be replaced for free. If it is not within the warranty period, you need to pay a certain fee. For an iPhone with a battery capacity higher than 80%, even if the user feels that the battery life is insufficient, the battery needs to be replaced at his own expense.
How to test the battery capacity?
Apple officials have provided a simple way to check the battery capacity. Users can check by the following steps:
Open the settings application.
Click on "Battery"
Click "Battery Health"
View "Maximum Capacity"
In the column of "Maximum Capacity", if the displayed number is less than 80%, the battery can be replaced free of charge.
Matters needing attention
Before replacing the battery, the following points should be noted:
Back up mobile phone data
Turn off the Find My iPhone function.
Unbind the phone from AppleWatch.
Avoid using unofficial battery replacement service.
In addition, it should be noted that Apple only provides free battery replacement service for some models of iPhone, and the specific models can be viewed in Apple official website. If the user's iPhone model is not covered by the free battery replacement service, the battery needs to be replaced at his own expense.