my iphone 12 max pro keeps restarting every time i unlock it

Hello Guerrero2390,

Thank you for reaching out to Apple Support Communities, and we'll be happy to help in any way we can. We understand you're having issues with your iPhone restarting on it's own. Try the steps here to see if they resolve the issue: If your iOS or iPadOS device restarts or displays the Apple logo or a spinning gear unexpectedly - Apple Support

"If your iPhone, iPad, or iPod touch unexpectedly restarts or shuts down, or displays the Apple logo or a spinning gear, learn what to do.

Check your software

Make sure that your device has the latest version of iOS or iPadOS and that your apps are up to date. If the issue continues after updating your software and apps, check your hardware.

Check your hardware

On an iPhone 6 or later, check your battery health under Settings > Battery > Battery Health.

If your battery doesn't need service, and your iPhone, iPad, or iPod touch continues to frequently restart or turn off, contact Apple Support.

If your apps quit unexpectedly, learn what to do.

If your device has a frozen screen, doesn't respond, or becomes stuck when you turn it on, learn what to do for iPhone, iPad, or iPod touch."

We hope this helps.

Cheers!