I have Big Sur, how do you backup an iPhone, that you cannot turn on (screen is black) to a Mac or iCloud before sending the device in for service?
On Big Sur you back up using Finder. How to back up your iPhone, iPad, and iPod touch - Apple Support
If you can't turn it on, you can't back it up.
If it is on but the screen is blank, you can't back it up because you can't unlock the phone.
Backups need to be made and maintained before the device fails.
On a Mac running Catalina or later (Big Sur), use Finder.
Regards
Giulio
the iPhone doesn't show up in the finder
My iPhone is set to automatically update to iCloud. I hope this works!
thank you
It isn’t showing up in Finder because it is disabled. But if you enabled automatic iCloud backups you should be able to restore from that.
how to back up iPhone without iTunes
