A lot. If you've ever wanted to limit the amount of time you spend on your iPhone, though, Apple's "Screen Time" function allows you to do just that, in two different ways. You can limit the time ...

You can use an Accessibility feature called AssistiveTouch to rotate your iPhone or iPad ... and then select "Rotate Screen." ...

If your iPhone has a home button, there's a different way to take a screenshot. Press the home button and the sleep/wake ...

An curved arrow pointing right. There's a hidden feature on the iPhone called "Speak Screen" that will make your iPhone read everything on your screen aloud to you. Here's how to find and enable it.

That should give you plenty of time to get to sleep. A similar trick is for automatically ... up to see it by tapping the screen, or nudging the surface that the iPhone is on.