my iphone 12 pro max freezes after downloading IOS 16.1.1. When will a fix be provided?

Thanks for reaching out mobilecs,

It sounds like your iPhone is freezing unexpectedly. We can help.

A good place to start is with these steps to Update your iPhone or iPad.

If the issue continues, you can check out this guide for If your iPhone won't turn on or is frozen:

If your screen is black or frozen

On your iPhone 8 or later, including iPhone SE (2nd and 3rd generation)

1. Press and quickly release the volume up button.

2. Press and quickly release the volume down button.

3. Press and hold the side button until you see the Apple logo.

4. If your phone doesn't turn on, follow these steps to check your hardware and charge your phone. You might need to charge for up to an hour.

5. If your phone still doesn't turn on, contact Apple Support.

Hope that helps.

Take care.