How to check the se battery loss of Apple mobile phone?

1, enter the phone settings, find the battery, and you can see it when you enter the battery (if you can't see it, it's a system version problem);

2. Download third-party software for battery life; ;

3. Connect the mobile phone to the computer, download AISI assistant on the computer, read the data of the mobile phone through AISI, and check the battery.