Back border after iOS 16 update on iPhone Pro Max 13

Hi gtop,

Welcome to Apple Support Communities. We understand that you're having an issue with the display on your iPhone 13 Pro Max after the iOS update. We'd like to help.

Is this black border around your whole display or around certain icons on your display? Have you checked to see if you have any Touch Accommodations set up on your iPhone? We ask because they can sometimes make a black box appear around the items that you're looking at. This resource can help you determine if it's part of this issue: Use Touch Accommodations with your iPhone, iPad, iPod touch, or Apple Watch - Apple Support

How to turn on Touch Accommodations

You can customize Touch Accommodations to fit your specific fine-motor skills needs. It's recommended that you configure your preferences before you turn on Touch Accommodations since it changes how your device responds to touch. 

1. On an iPhone, iPad, or iPod touch, follow these steps:

2. Go to Settings, then select Accessibility.

3. Select Touch, then select Touch Accommodations.

After you turn it on, it automatically appears in the Accessibility Shortcut.

If that's on, try to turn it off to see if that help. Let us know the results so we can plan the next steps, if needed.

Take care!