T-Mobile and Sprint merger - immediate benefit

https://www.washingtonpost.com/news/the-switch/wp/2018/04/30/what-the-t-mobile-and-sprint-merger-means-for-you/

What will happen to Sprint and T-Mobile subscribers?

For now, a new roaming agreement announced Sunday will allow Sprint customers to use T-Mobile’s network in places where Sprint’s is not available, giving them greater access to coverage. The two companies will otherwise operate independently until the deal receives regulatory approval.