Timotheus Hoettges, CEO of German telecommunications giant Deutsche Telekom, arrives for his company's annual press conference to present the 2015 business report on February 25, 2016 in Bonn, western Germany.

T-Mobile US will very likely be part of merger talks in the United States and its strong position there should give it time to find the best fit, its parent Deutsche Telekom said on Thursday.

"Purely theoretically, we can see several advantages to consolidation and convergence," Deutsche Telekom Chief Executive Tim Hoettges told reporters after its first-quarter results.

"The strong position we have established for ourselves gives us the time and space to evaluate all options together with colleagues in the U.S.," Hoettges said.

T-Mobile US, which is 64 percent controlled by Deutsche Telekom, was the main driver behind the German telecoms operator's better than expected 7.5 percent rise in core profit.

Major U.S. operators Verizon and AT&T have been struggling to fend off smaller rivals T-Mobile US and Sprint in a maturing market for U.S. wireless services.

Last month, T-Mobile US reported a 2.7 percent rise in post-paid customers to 35.3 million, continuing the steady increase in its subscriber base over the past four years.

Verizon, however, lost 307,000 retail post-paid customers or those who pay a monthly bill, in the first three months of 2017, the first quarter it has ever lost subscribers. AT&T lost 191,000 post-paid subscribers.

Unlimited data plans are among the latest incentives, one of many T-Mobile US initiatives shaking up the U.S. wireless market. In February, Verizon followed suit to offer an unlimited data plan for the first time in over five years.

"T-Mobile US continues to grow at breakneck speed," wrote Bernstein analyst Dhananjay Mirchandani, reiterating a "market perform" rating. "Leading indicators remain strong."