I can’t update the new iOS version on my iPhone XS

Clearly you are not stuck in a boot loop.

The updates require both WiFi and cellular service to update wirelessly. You do not have a cell signal.

It instructs you to update using a computer, try that and see what happens.

Click on this link for instructions on how to update your phone using a computer

https://support.apple.com/guide/iphone/update-ios-iph3e504502/ios

What happens when you try? If you really have an iPhone XS and you are still on iOS 12, you will most likely need to update using a computer.

Can you post a screenshot of the whole screen, it could reveal why you aren't able to update.

Make sure you:

• Are using a WiFi connection (not a hotspot).

• You have an active cell signal (You need both WiFi and cellular service to perform the upgrade).

• Are not using a VPN connection.

• Have your battery charged at least 50%. Better yet, keep it plugged in during the update.

• Do not have power save mode turned on.

• Do not have a beta version installed.

• You have at least 10 gigs of storage available.

Click on this link on what to do if you can't update your phone -

If your iPhone or iPad won't update – Apple Support (UK)

Emiliovs Said:

"I can’t update the new iOS version on my iPhone"

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Successfully Updating an iPhone:

A. Troubleshooting an Update not Responding:

Boot Loop: Perhaps it is stuck in a boot loop? This can occur when updating, and it got frozen.  So, user MY User Tip: How to Fix an iPhone in a Boot Loop - User Tip

B. Update Using a Computer:

Have a Computer Handy? If so, try using a computer to update. Go here: Update your iPhone Using a Computer - User Tip

Connect it to a computer as described; if it's a Mac running Catalina or newer, update it from the Finder instead of iTunes. Aside from this, there aren't any workarounds.

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