Why can’t I update my iPhone XR to the iOS 17 update

Re: Why can’t I update my iPhone XR to the new iOS 17 update

Wondering what happens when you try ... eg : an error message may help pinpoint the cause.

and

whether you are trying to upgrade using a strong wi-fi signal, cellular data, or via a computer.

and

if your iPhone XR has enough free storage space for the upgrade, and in which to operate smoothly.

Apple support have an article online (link below) that may help troubleshoot:

(iPhone XR is compatible with iOS 17 ok, so the update should proceed).

What to do: If your iPhone or iPad won't update - Apple Support