I got Connect by T-Mobile a few years ago when it was $10/mo prepaid ($11.03 with tax), and I am grandfathered in. It has a hard cap of 1GB/mo, then nothing. Then I got Hello Helium with a physical SIM on my exercise phone (out in the rain, at the gym) and it is completely free with ... wait for it ... 3GB/mo of data. Go figure. The Hello Helium app used to require location permission on at all times, but they eliminated that.