I read 3g was going away in March or April 2022, FWIW. But that does not appear to be the issue with either of your Kindles. Maybe try another location (might be local issue)?
The new Paperwhite (shipping later this week) does not have a cellular connection option at all.
The Oasis 1 didn’t ship that long ago, and apparently even the Oasis 2 has 3G, shipped only 4 years ago. Surely they knew the days of 3G were numbered by then?
|