Update iphone ios 14.7.1

Update iOS on iPhone - Apple Support:

https://support.apple.com/guide/iphone/update-ios-iph3e504502/ios

Settings…

1. Wi-Fi
   1. You must be connected to a solid Wi-Fi signal for any iOS update to occur. It will not install over a cellular connection.
   2. Realistically, you should have the phone connected to its charger
2. General > Software Update
   1. Your phone is up to date with an iOS version < 14, which means your phone is incompatible with iOS 14
   2. Your phone is running an iOS version < 14.7.1 and offers to update it.
   3. Your phone indicates you are fully updated with the version of iOS 14.7.1.