1. Open the phone, find the settings button on the phone's home screen, and click Open.
2. Click to enter the settings page, and you can find the battery column. Click Open.
3. Click to enter the battery page, you can find the column of battery health (Beta version), and click Open.
4. Click to enter the battery health (Beta version) page, and you can see the maximum capacity of the battery, which is the battery loss.