Per the Freedom Mobile Compatibility Checker , my Canadian-model Galaxy S9+ (SM-G965W) should no longer work in the USA. 3G shutdown has taken effect, and phones without "LTE Roaming" - which is somehow different than LTE "calling" - are no longer functional. So I went to a shit-ton of work to get alternative phones lined up - an S22 and an S10+ - for my upcoming business trips. (The S10+ was the last model with a headphones jack.) However, two separate trips from July 23 to August 04, 2022, to Philadelphia, PA and Denver, CO, show that my S9+ still works just fine on T-Mobile in the USA - even though according to Freedom, it shouldn't. I tested the Samsung Galaxy S10+ and Galaxy S22 5G as well. They both work too. For reference, the S9+ did show LTE when calling, so it's not likely picking up on some leftover 3G kit that hasn't been decommissioned yet. It did initially have a touch of trouble - the T-Mobile signal was weaker, so I think it tried A...