Unlock my iPhone 6s
Unlock my iPhone unavailable iPhone 6s
iPhone 6s, iOS 15
Question marked as
“Unavailable” indicates that you (or someone else) has repeatedly entered an incorrect Passcode. If you have a countdown, you can wait and try again. If you have tried too many times, you’ll have to restore the phone.
Ref: How to reset your iPhone, iPad, or iPod touch when you forgot your passcode - Apple Support