How to update with your own mobile data not on Wi-Fi ?

If you have an iPhone 12 or 13 with a 5G cellular plan and are on a 5G network, you can update over cellular.

https://www.idownloadblog.com/2021/10/06/ios-updates-over-5g-tutorial/

You can also update using your computer.

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

Hello,

I am sorry to say this, but it is not possible to allow your iPhone to update using cellular data. You can connect your device to iTunes with a computer and a cord and do it that way, but the only other way is through Wi-Fi.

Sincerely,

Captain

👉🏼 It actually is possible with a 5G enabled iPhone (I’ve done it very recently). 😉