Why is part of my screen freezing after update my iOS

Hey there Febright,

We thank you for reaching out to Apple Support Communities. We'll be happy to look into what's going on with your display after updating iOS.

Start by making sure you have the very latest iOS update: Update your iPhone or iPad - Apple Support

If so, follow these steps to work with a non-responsive device: If your iPhone won't turn on or is frozen - Apple Support

If the issue happens again and affects only one app, work with the app itself, removing it and adding it back: If an app on your iPhone or iPad stops responding, closes unexpectedly, or won’t open - Apple Support

Take care.