No data after updating Samsung A51 to Android 12

[kar]

I updated my Moto G Power when prompted this week.
Could not access data afterwards.
I googled, someone at Reddit said they went to the Network settings, so I did.
The APN was different from what I remembered. Setting it back to VZINTERNET worked, now I have data again.

Tracfone could -- could -- advise customers of this via text messaging, since so many of us have had the problem.
Maybe the android 12 updates have mostly finished, but I only received the update prompt a couple of weeks ago.
I don't like android 12 so far, but it's early days.