https://www.techradar.com/news/rivals-and-consumer-groups-worry-about-t-mobile-and-sprint-merger

The proposed $26 billion merger between T-Mobile and Sprint in the US has received opposition from rivals, unions and consumer groups who claim the deal would harm competition, cost jobs and raise prices.

The blockbuster transaction has huge implications for the US domestic market as the number of major mobile operators would be reduced from four to three. The evidence suggests that in European markets that have seen similar contractions, prices have risen.