Backup to iCloud on cellular data?

Exactly, as they said you, you can put other device on wifi hotspot: either mac, iphone, a wifi network you created to which your iphone can connect to as if a wifi network and upload icloud photo library, which is the only thing that doesn't work over only mobile data (calendar, contacts, email icloud sync work over cellular data)

Other option is to share every photo you take to a shared album of your won on icloud photos, I think mobile data upload this changes.

I have the same issue, I don't know why apple doesn't allow us to sync over mobile data network. After all is us who pay the bills isn't it? Of 4G internet, it's really useful

If you have another device, like an iPhone, you can turn on the hotspot and have your iPad connect to that. The iPad believes it's on wifi, and will backup

Unfortunately not.

If you have any suggestions that you think might enhance iCloud you can send Apple your feedback here.

I agree with Winston that you MUST backup to iCloud over WIFI. If you desperately need to backup your iPad, there are several places that offer free WIFI for the price of a cup of coffee or happy meal.

No happy meals around here. Not even if I drive to the nearest small mountain village. No wifi. Just unused but already payed for cellular data. Anyway who wants to stand around in public waiting for your device to do its business, staring at a small screen.

Try this:

Go to Settings > iCloud > "iCloud Drive" and then enable "Use Cellular Data" at the bottom of the screen.

I have the same problem and tried your resolution but the iCloud backup still requires a wifi connection. Seems to just apply for the documents and photos that can be uploaded separately to the iCloud Drive.

Lol and slow as ****.

This is only for content. You still have to be on wifi to back up the device for a restore or to transfer to a new device.