You can either say "Hey Siri" or just "Siri" to wake the assistant, press and hold the Side button (on Face ID models like the iPhone X and iPhone 11 ... has frozen, or when the standard restart ...

a force restart works just as well. This method "forces" your iPhone to turn off, even if it's frozen. Here's how to restart or force restart any iPhone — and what to do if restarting doesn't ...

Dealing with an iPhone that has a black or frozen screen? There are a few steps ... your first option is a force-restart. In most scenarios, this method should get you unstuck.