today I heard that it might be possible to download an iOS update on a supervised via mobile data since the release of iOS 12.
I could not believe that because I tested a while ago the “update defer” feature. You can force to update etc. But downloading an update doesn
t work if the device doesnt have a Wi-Fi connection. I tested it a few minutes ago and pushed an update policy on a supervised device.
At first I got a message “update requested” but nothing happened. I even changed the SIM card and rebooted the device and there was no entry in “iPhone Storage” for the update.
After I connected the device to a Hotspot the download started immediately and an entry in “iPhone Storage” appeared. At least in my case a Wi-Fi Connection is necessary to download the update.
I can only speak for supervised devices with XenMobile. Maybe another EMM allows to force the update over mobile data. But I could not find anything in the Mobile Device Management Protocol Reference.
Does somebody have another experience and can download an iOS update via mobile data?