Mobile phone: iphone 1 1
System: ios 15.3
1. First, open the "Settings" of Apple's mobile phone and click the "Battery" option.
2. Select "Battery Health".
3. Finally, enter the battery health page to check the battery health on the right side of the maximum capacity.
Battery health protection measures
It is always recommended to use the original Apple accessories that come with your mobile phone. However, since Apple has stopped equipping the iPhone with chargers, you need to buy one separately. You can get Apple's official charging adapter, or choose an MFI-certified iPhone charger or a wall adapter (made for iPhone). Unauthorized after-sales charger or data cable may damage the battery of iPhone. It is also recommended to charge the iPhone by wired means instead of wireless charging.
Heat is one of the biggest enemies of any battery. Avoid placing iPhone in extremely hot environment. You can do this by not putting your iPhone on the dashboard when you are driving in the sun. When you are in the sun, try not to perform demanding tasks, such as games. The heat from the sun, the extra heat generated by the CPU and the maximum brightness screen will damage the battery.
Avoid using iPhone when charging, let it charge quietly, and don't bring any burden to its hardware. Performing resource-intensive tasks such as games while iPhone is charging will generate more heat, and over time, overheating will damage the battery.