How does Apple 4S detect battery loss?

First, download and install AISI Assistant in the computer, and open and install AISI Assistant in the PC.

Second, then connect the device to the computer through the data cable, and then AISI Assistant will automatically identify your device, read your device information, and display the "charging times" and "battery life" of your battery.

Among them, "charging times" represents the cycle charging times of the battery. If the equipment is new or used for a short time, the number of cycles detected is generally single digits. When it is detected that the battery cycle times of an iPhone are too high, it means that the phone has been used for a long time. If the battery life is too low, it is recommended to replace it with a new one to avoid affecting the battery life of iPhone.

3. You can click on the battery details behind "Battery Life" to view the updated battery information.