Hello Log-in!
We appreciate you taking the time to contact us on the forums! I know exactly how it can be not being able to access your phone. I can definitely help you get this resolved!
There is a way to reset your iPhone password! I found a great support article here which has quite a few different ways to do this. By doing one of these methods, you will be able to get back into your phone!
I hope this is able to resolve your issue! Please contact us if you have any more issues or concerns.
Jonathan, AT&T Community Specialist