Consequences of enabling Low Power Mode

Low Power Mode restricts certain functions like background app refresh in order to conserve battery life. I thought I would list all of the restrictions I've found that Low Power Mode imposes, and others are of course free to add on if I missed any.

Background App Refresh is disabled

Mail will not fetch new mail automatically

Brightness is lowered (the max brightness is lower than with LPM off)

The battery percentage gauge cannot be turned offNight Shift (iOS 9.3 and iOS 9.3.1) cannot be enabled. In iOS 9.3.2 and later, Night Shift and LPM can be enabled simultaneously.

I read on one site that Live Photos will not animate in Low Power Mode, but I have been able to do so without issue so I don't think LPM impacts Live Photos at all.

I also recently discovered that Auto-Lock is set to 30 seconds and cannot be overridden while LPM is on.

However, there is one other thing I noticed, and that is you cannot use "Hey Siri" unless plugged into the charger. When Low Power Mode is off, the iPhone 6S can use "Hey Siri" without being plugged in. UPDATE: In iOS 12 and later, "Hey Siri" on the iPhone 6S and later works even in Low Power Mode.

This user tip was generated from the following discussion: Consequences of enabling Low Power Mode