Want to restart my iPhone 11 without cellular connection

hi there,

welcome to the apple community website. here is some links that may help:

If you forgot your iPhone passcode - Apple Support

Restore your iPhone, iPad, or iPod to factory settings - Apple Support

if you like, you can make an appointment with your nearest apple store to resolve this for you:

Apple Store - Find a Store - Apple

Get your iPhone, iPad, or iPod touch ready for service - Apple Support

if you require any more help, please respond to this message

thanks

Killian

If your device has iOS 15.2 or later installed, you can reset it without a computer; check out this link→How to reset your iPhone, iPad, or iPod touch when you forgot your passcode - Apple Support. Otherwise you will need a computer:

See this Apple support link→If you forgot the passcode on your iPhone, or your iPhone is disabled - Apple Support

Or watch this companion video ⬇️

After restoring the phone using one of the methods above you can restore your most recent backup.