When Apple released iOS 9.3.1, it removed the ability to keep Night Shift and Low Power Mode enabled simultaneously. The ability to turn on both features was already hidden and only possible by using Siri, but the iOS 9.3.1 update made it so that Siri would disable one of them before enabling another.
We’ve found a workaround that once again allows you to use both modes at once. It’s not as easy as it once was, but it’s still fairly straightforward for those of you who desire to use Low Power Mode and Night Shift mode at the same time.
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Step 1: Enable Low Power Mode via Settings → Battery
Step 2: Invoke Siri and ask to enable Night Shift. Siri will reply with the following: In order to turn on Night Shift, I’ll have to turn off Low Power Mode. Shall I continue?
Step 3: Reply with a “yes” and before the response is confirmed, press the sleep button on your iPhone. You should then hear Siri’s confirmation beep.
Step 4: Unlock your iPhone, and if you timed the sleep button press correctly, you should see Low Power Mode and Night Shift enabled at the same time.
Note that the Night Shift switch in both Control Center and Settings → Display & Brightness will both be greyed out. Despite this, it will be very evident that Night Shift is enabled by looking at the color temperature of the screen.
As you can see from our video walkthrough, this trick definitely works, but you may have to give it a few tries to get the timing just right. Did it work for you?