Family sharing
How do I get out of one family to join another?
iPhone 12 Pro Max, iOS 15
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See Leave Family Sharing - Apple Support. Note this restriction from Set up Family Sharing - Apple Support:
If you can't accept the invitation, check if someone else has joined a family with your Apple ID. Remember, you can only join one family at a time, and you can only switch to a different family group once per year.
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