It's cold, and Apple's mobile phone consumes a lot of power.

About battery life Battery life is not only the length of time after battery assembly, but also related to its chemical age. The chemical life of batteries is determined by many complicated factors, including temperature history and charging mode. All rechargeable batteries are consumable parts, and with the increase of chemical aging of batteries, the performance of batteries will decrease. With the increase of chemical age of lithium ion battery, the amount of charge it can hold will decrease, which will lead to the shortening of battery life and the decline of peak performance.

The impact of charging on the battery For most customers, the battery power of the iPhone should last for a whole day. Even if the battery is not completely exhausted, you can charge the iPhone every night.

When the battery is fully charged, the iPhone will automatically stop charging, so you can connect the iPhone to the charger overnight without security problems. If the battery power drops below 95%, it will automatically continue to charge.

Please disconnect the power when the iPhone is fully charged. By default, iPhone will be charged with the optimized battery. "Optimizing battery charging" can shorten the time required for iPhone to be fully charged, thus extending battery life. It can fully charge the iPhone in time for your convenience.

When charging, the battery will get hot, which may shorten the battery life. In order to reduce the influence of fever and prevent overheating, iPhone will gradually reduce the charging current when the battery is close to full charge.

According to the design, the iPhone can work normally in a wide ambient temperature range, and the ideal temperature range is16 C to 22 C (62 F to 72°F).

Please avoid using or charging the equipment at ambient temperatures above 35 C (95 F), which may permanently shorten the battery life.

When using the device in a very cold environment, you may notice that the battery life is shortened. This situation is temporary; When the battery temperature returns to the normal working range, the performance of the battery will also return to normal.

When the battery temperature exceeds the recommended temperature, the software may limit charging after the battery charge reaches 80%.

The influence of WLAN and Bluetooth functions on the battery. Without connecting the network or accessories, WLAN and Bluetooth functions will only consume a little battery power. For the best experience on iPhone, please keep WLAN and Bluetooth enabled. Learn more about how to charge the iPhone battery and how to extend the battery life.