1. View through mobile phone settings: first open the "Settings" application of the mobile phone, then find the "battery and performance" or "power saving and battery" option, and click to enter. Here, you can find "battery health" or similar options. After clicking, the system will display the current battery health status.
2. Inquiry by using engineering instructions: enter a specific code (such as * # * # 6485 # * *) in the dialing interface, and then dial it out, and an interface containing detailed information of the battery will be opened, in which the code can display the health status of the battery.
3. View battery cycle and actual capacity: After entering a specific code in the dialing interface, you can view the battery cycle (such as MF_02), the current actual battery capacity (such as MF_05) and the battery capacity when leaving the factory (such as MF_06).