How do I update iOS 15.0 to download an app?

tabzx027 wrote:

How should I update iOS 15.0 to download an application

Here is how to: Update iOS on iPhone - Apple Support

iPhone XS, iPhone XR, iPhone SE 2nd, and newer, can get to versions after iOS 15, such as to iOS 18, and to the current iOS 26.

iOS 15 is the last supported version for iPhone 6s, iPhone 6s Plus, iPhone 7, iPhone 7 Plus and iPhone SE 1st gen.

Here is how to: Identify your iPhone model - Apple Support

How to download apps: Get apps in the App Store on iPhone - Apple Support

On what device?

Are you looking to update to iOS 15 or from iOS 15 to something else?

What you can update to will depend on what device model you have.

To update to iOS 16 you need an iPhone 8 or later for instance.

What happens when you go to Settings ➜ General ➜ Software Update on your device?