Why is it unacceptable to update my phone with my personal data but Wi-Fi only
How will I update my phone with personal data than using Wi-Fi
Question marked as
If you own an iPhone with real 5G cellular service, you can update over the air. If you don't, you HAVE to use Wifi. That was determined by the carriers. If you can't use Wifi, you can update your iPhone using your computer (Mac or Windows) or go somewhere where you can access Wifi.