If case you have updated to iOS 9.3, chances are that you must have tried out the new Night Shift Mode feature on your iPhone or iPad. While enabling this feature you may have also noticed that Night Shift Mode automatically turns off when Low Power Mode is enabled on your iPhone.
Also, there is no way to manually enable Night Shift while Low Power Mode is enabled on your device. You will find the Night Shift Control Center toggle greyed out and also you won’t be able to enable Night Shift from Settings > Display & Brightness.
Use Night Shift Mode with Low Power Mode
Follow the steps below to use Night Shift Mode while Low Power Mode is also turned on.
1. Hold down the Power button, until Siri pops up
2. Ask Siri to “Turn on Night Shift Mode”
Surprisingly, Siri will turn on the Night Shift Mode on your iPhone even with Low Power Mode enabled on your device.
However, when you head over to Settings, you will see that the Night Shift Mode option is still greyed out, despite the feature being Turned On by Siri. This means that you won’t be able to get out of Night Shift Mode.
If you want to turn Night Shift Off, you will once again need Siri to do it for you. Just tell Siri to “Turn Night Shift Off” and it will be promptly switched Off.
Why Night Shift Mode Does Not Work With Low Power Mode
There is nothing on Apple’s website as to why Night Shift Mode does not work with Low Power Mode. Going by discussions in tech communities, everyone appears to be pointing to Night Shift Mode using more power.
I am a beta tester and I was annoyed when in one of the betas they removed night shift with low power mode. Earlier in the beta you could have them both on but they removed it because they claimed that night shift used more battery – Aldan H, Commented on Forbes
What do you think? Is it possible that Apple has left a bug (purposefully?), disabling Night Shift option in Low Power Mode but allowing it via Siri?