Can I use my phones internet to backup an I use my, I don’t wifi
Can I use my phones internet for backup
iPhone 8 Plus, iOS 15
Question marked as
Top-ranking reply
Not with an iPhone 8 but it is possible with some carriers with an iPhone SE 3rd generation, iPhone 12 or 13. See the following from Back up iPhone - Apple Support
Note: On models that support 5G, your carrier may give you the option to back up iPhone using your cellular network. Go to Settings > [your name] > iCloud > iCloud Backup, then turn on or off Backup Over Cellular.