Just checked my T-Mobile privacy settings. I had most everything turned off, but then I saw a few were turned on (such as my opt-out marketing settings). Opting out of everything took 2 tries to have them all disabled (sludge).
This one was seemingly a new one, and makes the hairs on my neck go up:
Make your choice about profiling and automated decisions.
You can tell us not to use your personal data for certain kinds of "profiling" that we might do in the future. This toggle allows you to opt out of having profiling used for future decisions that produce legal or similarly significant effects about you. We don't use profiling to make these kinds of decisions now. Turning this "OFF" or gray means "opt out of profiling and automated decisions."