I want to update my iOS version
Update my iOS version
Question marked as
iPhone 8 and newer can be updated to iOS 16.
iPhone 6s and iPhone 7 can be updated to iOS 15.
iPhone 6 and earlier can be updated to iOS 12, or earlier.
Remove any add-on VPN, free up sufficient storage, remove any beta profile, force-restart, connect to Wi-Fi, and update.
Links…
Update iOS on iPhone - Apple Support
How to uninstall iOS or iPadOS beta software - Apple Support
Force restart iPhone - Apple Support
If the update fails, use a Mac or Windows PC to update.