How do I update iOS on my iPhone 7 Plus?

Your iPhone 7 Plus can be updated to the latest version of iOS 15. It will never be able to update to iOS 16 or later.

If you want to use apps or features that require iOS 16 or later, you will need to purchase a newer model iPhone.

The only future updates your iPhone 7 Plus may receive will be security updates. It will never receive a whole iOS upgrade.