How can I update my iPhone?

Your tag line indicates that you have an iPhone XS Max.

That iPhone is compatible with iOS 17.

iPhone models compatible with iOS 17 - Apple Support

Have you followed the directions in the Related Article?

How to download iOS 17 - Apple Support

If so, what happened?

Armanijooyf Said:

"Just want to ipdate: Want to update my iPhone because iOS 16 for a long time"

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Updating an iPhone XS Max to iOS 17:



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. If any updates are availabe, they will install, sure enough.