Caught by surprise. Here's some links:
* https://www.cnet.com/news/t-mobiles-26-5b-sprint-mega-merger-clears-major-legal-hurdle/ a federal judge in New York allowed # and # to merge.
* https://www.androidauthority.com/t-mobile-sprint-merger-plans-921398/
* https://www.androidcentral.com/what-you-need-know-about-t-mobile-sprint-deal
* https://www.digitaltrends.com/mobile/t-mobile-sprint-merger/

I'm currently using Sprint. Two of my sisters are using T-Mobile and have lots of problematic restrictions ... I may take a look at AT&T or Verizon soon.