Lisa770 wrote:
Just bought a new iPhone 15 pro max and I have not been able to set it up yet and can’t restart it how can I turn it off without using the screen
[Re-Titled by Moderator]

Have you shutdown & restarted the iPhone ie power off/on...
Restart your iPhone - Apple Support
Reset or a Force Restart,
Force restart iPhone - Apple Support
Restore from backup, restore as new device.
Restore your iPhone, iPad, or iPod to factory settings - Apple Support
Find out what Siri can do on iPhone
Ask Siri to “Turn on voice control”. Everything on screen will get a number. Call out the number you want to tap. You can navigate to Settings > General. Say “scroll down” until you see “shut down”. Say the number for “shut down”