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2 Clarified symptoms in Voicemail screen.
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Yesterday I got a call from my wife and the iPhone said "Maybe Mrs. SSteve". The phone number was the international version of a U.S. phone number and her custom ringtone didn't play:

Incoming call

Voicemail is also showing international versions of U.S. phone numbers and also shows "Maybe" (normally it just shows the name and no phone number at all):

Voicemail

Contacts isn't formatting phone numbers at all:

Contacts

Contacts on my iPad still formats numbers the way I expect:

Contacts on iPad

I'm running iOS 12.3.1 on an iPhone 6. I remember seeing recently that there was a carrier update. I must have installed it because Settings -> General -> About doesn't show an available carrier update.

I tried iPhone Contact List Default Country Wrong but dialing *228 says the number isn't allowed.

I tried setting my Region in Settings -> General -> Language & Region away from United States and back but that didn't work. Where else does iOS get the region for phone numbers?

Yesterday I got a call from my wife and the iPhone said "Maybe Mrs. SSteve". The phone number was the international version of a U.S. phone number and her custom ringtone didn't play:

Incoming call

Voicemail is also showing international versions of U.S. phone numbers and also shows "Maybe":

Voicemail

Contacts isn't formatting phone numbers at all:

Contacts

Contacts on my iPad still formats numbers the way I expect:

Contacts on iPad

I'm running iOS 12.3.1 on an iPhone 6. I remember seeing recently that there was a carrier update. I must have installed it because Settings -> General -> About doesn't show an available carrier update.

I tried iPhone Contact List Default Country Wrong but dialing *228 says the number isn't allowed.

I tried setting my Region in Settings -> General -> Language & Region away from United States and back but that didn't work. Where else does iOS get the region for phone numbers?

Yesterday I got a call from my wife and the iPhone said "Maybe Mrs. SSteve". The phone number was the international version of a U.S. phone number and her custom ringtone didn't play:

Incoming call

Voicemail is also showing international versions of U.S. phone numbers and also shows "Maybe" (normally it just shows the name and no phone number at all):

Voicemail

Contacts isn't formatting phone numbers at all:

Contacts

Contacts on my iPad still formats numbers the way I expect:

Contacts on iPad

I'm running iOS 12.3.1 on an iPhone 6. I remember seeing recently that there was a carrier update. I must have installed it because Settings -> General -> About doesn't show an available carrier update.

I tried iPhone Contact List Default Country Wrong but dialing *228 says the number isn't allowed.

I tried setting my Region in Settings -> General -> Language & Region away from United States and back but that didn't work. Where else does iOS get the region for phone numbers?

1
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Contacts and Phone on iPhone think I'm in a different country

Yesterday I got a call from my wife and the iPhone said "Maybe Mrs. SSteve". The phone number was the international version of a U.S. phone number and her custom ringtone didn't play:

Incoming call

Voicemail is also showing international versions of U.S. phone numbers and also shows "Maybe":

Voicemail

Contacts isn't formatting phone numbers at all:

Contacts

Contacts on my iPad still formats numbers the way I expect:

Contacts on iPad

I'm running iOS 12.3.1 on an iPhone 6. I remember seeing recently that there was a carrier update. I must have installed it because Settings -> General -> About doesn't show an available carrier update.

I tried iPhone Contact List Default Country Wrong but dialing *228 says the number isn't allowed.

I tried setting my Region in Settings -> General -> Language & Region away from United States and back but that didn't work. Where else does iOS get the region for phone numbers?