How to allow calls from a specific area code/prefix
I know, I know. Everybody else wants to BLOCK calls these days. But my Mom lives in a nursing home, and given the rotating staff, different people call with important medical updates...and get shunted to voicemail without the phone ringing because these numbers are not in my Contacts lists. They do, however, all come from the same area code and prefix. What do I do to make sure I get these calls?
iPhone 12, iOS 16