While Google doesn’t explicitly mention it, Pixel phones are smart enough to automatically turn off the Always-on Display ...
I began to notice the Fitbit app sending its Body Response notifications almost immediately after I started wearing the Pixel ...
Your Pixel's always-on display is convenient but drains battery, so Google is working on a new option that turns it off intelligently.
You don't need the power button to restart your Android. If yours is broken or you just want options, here are two.