Function switching degree (Bluetooth, Wi-Fi, background app, cellular network, nfc, siri), in flight mode, adjust the screen brightness to the lowest, turn off brightness level, turn off Wi-Fi, Bluetooth, hi siri, cellular network, and delete all apps. This standby time is also the longest, and the official website closest to the iPhone shows the standby time.
However, this phenomenon does not exist, so unless the battery is in a maintenance state or automatically turned off, the battery belongs to normal battery health, that is, the effective total capacitance ratio of the battery.
Battery health:
That is, the effective total capacitance ratio of the battery, and part of it is the average ratio within the effective service period of the battery, or the expected service time.
When the battery usage strategy changes, the power consumption calculation and battery optimization procedures change, which will change the health status of the battery. After updating the new system, it is found that the health of the battery has increased. This is a rare event.
The battery is a consumable, and the longer the battery cycle is broken, the lower the effective actual total capacitance of the battery will be. However, the indicator of health is not just a total capacitance. The health of the battery comes from the data of the control chip on the battery line, and the battery optimization program will be changed when the system is updated.