New SIM card; contacts messed up
Somebody asked this question a while back:
"I just changed my SIM card due to an international move. All of my contacts are still there in my contacts app, as I had them saved to iCloud and not my old SIM card, but when I receive iMessages from anyone their contact names are no longer appearing, even when I’m receiving iMessages over WiFi instead of cellular data."
...and got 2 answers, neither of which fixed this same problem I ran into when I changed SIMs going from the US to the UK. The solution for me was to add "+1" to my US numbers that weren't showing up, and I guess it is good practice to "internationalize" all the phone numbers in your Contacts with "+" country-code.
No idea why dial assistant doesn't sort this automatically, but maybe that's outbound only.