How to unlock an iPhone 6s showing as unavailable?
The phone is unavailable at the moment
[Re-Titled by Moderator]
Original Title: I want to help a friend with her iPhone 6s plus to unlock it
iPhone 6s, iOS 15
The phone is unavailable at the moment
[Re-Titled by Moderator]
Original Title: I want to help a friend with her iPhone 6s plus to unlock it
iPhone 6s, iOS 15
Passcode
Your data is not lost if you have a backup either on iCloud or iTunes.

If you see an iPhone or iPad unavailable message or a "Security Lockout" screen
If you forgot your passcode, you can use your Apple ID and password to erase and reset your device without a computer.
Learn what to do if you see "[Device] unavailable" or "Security Lockout" on your iPhone or iPad.)

iPhone is disabled.
Following this process is the only way out if your iPhone is disabled. The steps given in this link will help you reset the passcode -> If you forgot the passcode for your iPhone, iPad, or iPod touch, or your ...

Regarding your data…
Passcode
Your data is not lost if you have a backup either on iCloud or iTunes.

If you see an iPhone or iPad unavailable message or a "Security Lockout" screen
If you forgot your passcode, you can use your Apple ID and password to erase and reset your device without a computer.
Learn what to do if you see "[Device] unavailable" or "Security Lockout" on your iPhone or iPad.)

iPhone is disabled.
Following this process is the only way out if your iPhone is disabled. The steps given in this link will help you reset the passcode -> If you forgot the passcode for your iPhone, iPad, or iPod touch, or your ...

Regarding your data…
How to unlock an iPhone 6s showing as unavailable?