iPhone 7于2016年发布，配备了一块1960mAh的锂离子电池。该电池设计用于在正常使用条件下提供长达14小时的通话时间和多达13小时的互联网使用时间。然而，随着时间的推移，电池的容量会逐渐降低，导致使用时间缩短。

The ability to switch off the battery saver will appear in iOS 11.3 when it is ... out-of-warranty battery replacement from $79 to $29 in the US for anyone with an iPhone 6 or later.

Does your iPhone keep shutting down even though the battery is showing that it still has power? Here is why it may be ...