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DeltaMac

macrumors G5
Jul 30, 2003
13,749
4,572
Delaware
You mean "unblock" a caller?
/Settings/Phone/Blocked Contacts
Click the Edit button.
Click the red "minus" next to the phone number you want to unblock, and click "Unblock"

You add blocked callers one at a time, and I think you also unblock (delete blocked numbers) one at a time.
 
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