T-Mobile US Inc, the No.3 US wireless carrier, reported higher-than-expected quarterly revenue and profit as its promotional offers helped add more subscribers. T-Mobile had a number of promotional offers in the fourth quarter, including a free iPhone 7 offer with eligible trade-in around Black Friday.

Riding on the success of these offers, the company gained market share from rivals Verizon Communications Inc, AT&T Inc and Sprint Corp in an oversaturated US wireless market.

T-Mobile said in January that it added 933,000 post-paid phone subscribers, or those who pay monthly bills, on a net basis, in the three months ended December 31.

Chatter around a deal between T-Mobile and Sprint Corp resurfaced in December after Masayoshi Son, whose SoftBank Group Corp is a majority shareholder in Sprint, pledged a $50 billion investment in the United States. T-Mobile's total revenue jumped 23.4 percent to $10.18 billion. The company's net income rose to $390 million, or 45 cents per share, for the quarter from $297 million, or 34 cents per share, a year earlier.

Copyright Reuters, 2017