Forget blue light blocking for better sleep — this is the hidden iPhone feature to use instead

This image shows a hand holding an iPhone showing the Tom's Guide best mattress page in grayscale. In the background is a bed and pillows.

Bright lights, flashing colors, exciting sounds — my phone is an amusement park of temptation when I'm trying to sleep. And just like an amusement park, too much time on it leaves me dry-eyed, bleary and disorientated.

I've tried various blue light filters but they've never got to the heart of the matter: a good scroll is just too enticing.