Materials/Tools: Take iPhone as an example.
Specific operation can refer to the following steps:
First, open "Settings" on the phone desktop.
2. Open the "Settings" page, find the "Battery" column, and click to enter.
3. Select "Battery Health" in "Battery" to proceed to the next step.
Fourth, finally, you can see the "maximum capacity (battery life)" of the battery on the "Battery Health" page.