I have 3rd generation SE from 2022, so not so old after all. I turned off WiFi and made a local call, but I didn't see 'LTE', just 'Public Mobile'. Do I have to test with a long distance call, or maybe from the U.S.?
Thanks for that explanation. I didn't realize that LOCAL calls would start using the Long Distance add-on after the 100 minutes of subscription were used. I just tested it, and VOILA!