How can I phone in available

Hi astig227,

welcome to the Apple (user-to-user) Community.

Re: "How can I phone in available : It’s lock I don’t really know what to do."

Wondering if you just need to enter your passcode:

Or if you forgot your passcode: How to reset your passcode using a computer.

If you forgot your iPhone passcode - Apple Support

or

How to reset your passcode without a computer if you have iOS 15.2 or higher.

If you see an iPhone or iPad unavailable message or Security Lockout screen - Apple Support

________________________________________

However, if you see the "Activation Lock" screen:

How to remove Activation Lock - Apple Support

All the best :-)