Why is a different device showing up as my icloud backup?

My apple ID is used for my iphone, ipad, and my friends iPhone. Usually the bottom icloud thing says "Danielle's iPad" but today I noticed it says my friends iphone. Why is it showing this and what does it mean? I don't want my friends stuff syncing to my devices and vice versa. Why is a different device showing up as my icloud backup

Perhaps your friend backed up their device. This is why I wouldn't share my Apple ID. Let them get their own. Not like there's a charge involved.

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