How to update iPhone 11 from iOS 17.6 to iOS 18?
I have an iPhone 11 iOS 17.6 I want to update to 18 but in the settings there are only 26 iOS
[Re-Titled by Moderator]
Original Title: update
iPhone 11
I have an iPhone 11 iOS 17.6 I want to update to 18 but in the settings there are only 26 iOS
[Re-Titled by Moderator]
Original Title: update
iPhone 11
You cannot pick and choose an iOS version. What you get is Settings > General > Software update > [All options are available here]
An example image is given below.

You need to correctly Identify your iPhone model - Apple Support

If you have a device that will offer iOS 26 then iOS 18 is no longer available to you.
How to update iPhone 11 from iOS 17.6 to iOS 18?