Found iphone
How do I unlock an iPhone 12 that says iPhone unavailable with computer of passcode?
iPhone 12
Question marked as
You will need to restore your phone.
How to reset your passcode without a computer if you have iOS 15.2 or higher.
How to reset your iPhone, iPad, or iPod touch when you forgot your passcode - Apple Support
How to reset your passcode using a computer.
If you forgot your iPhone passcode - Apple Support