My iPhone XR keeps freezing until I restart it

This could be related to one of the two things listed below or both.

1) Double check to ensure that you have ample free storage space available on your iPhone 11. Open Settings ➡️ General ➡️ About ➡️ Available: Here you will see the available storage space on your iPhone. You should maintain at least 10GB or more free storage space for the iPhone’s efficient operation.

OR

2) You may have a poor battery condition which cannot provide sufficient power for peak performance. What is the Battery Health of your iPhone? Open Settings ➡️ Battery ➡️ Battery Health and let us know which percentage you see for Maximum Capacity. Also note what is written under Peak Performance. If your battery's Maximum Capacity shows a value of 80% or less, then it has gone through its lifecycle and therefore should be replaced, according to Apple.

Axel F.

Open Settings App > General > iPhone Storage

How much free space do you have on your iPhone? For it to work well, you can't be out of storage or close to out of storage.