How to recover iPhone 'unavailable' without restoring?
iPhone unavailable in emergency, how to recover without restoring?
[Re-Titled By Moderator]
iPhone 15 Pro Max, iOS 17
You don't, reseting your phone is the only way to unlock it.
If you forgot the passcode on your iPhone, or your iPhone is disabled or unavailable -
Click on the link for instructions on how to reset your passcode without a computer if you have iOS 15.2 or higher.
Click on the link for instructions on how to reset your passcode using a computer.
If you forgot your iPhone passcode, use your Mac or PC to reset it - Apple Support