省电：在实时显示时关闭显示屏或减少在空闲时间的背光。

Power saving: Turn off display or reduce backlight in LiveView during idle times.

youdao

此外，一些用户反映，当关掉显示屏时，无线连接会关闭。

Another user reports that the wireless connection shuts off when you turn off the display.

youdao

在iPhone里使用的那种机制是用来在通话时感应，比如说，当它被按到一个物体上，通常是你的头，它会通知显示屏关闭。

That mechanism in the iPhone is used to detect when, say, it's pressed against an object, usually your head, to tell the display to turn off during a call.

youdao