Executives are promising to hire thousands of people in a bid to create a nationwide 5G network.
T-Mobile CEO John Legere told reporters on a conference call Sunday that the company plans to deliver "the highest capacity network in US history." The tie-up would position the telecom companies as fiercer competitors to Verizon and AT&T, which have long dominated the US market.
The company would be called T-Mobile.
T-Mobile and Sprint said they expected to complete their deal no later than the first half of 2019, an ambitious goal given the intense U.S. regulatory scrutiny it will be subjected to. T-Mobile will not be liable to pay Sprint a breakup fee should regulators block the deal, according to sources who asked not to be identified because that detail in their contract has not yet been made public.