T-Mobile CEO John Legere. (GeekWire File Photo)

T-Mobile added another 1.6 million customers in the second quarter, topping 75 million customers for the first time, and reporting its 21st consecutive quarter with more than 1 million net customers.

Its earnings of 92 cents per share beat Wall Street’s expectations by 6 cents, and total quarterly revenues rose 4 percent to $10.6 billion for the Bellevue, Wash.-based wireless company.

But the big question mark looming remains regulatory approval of the company’s pending $26 billion merger with Sprint.

“We are optimistic and confident that regulators will recognize the significant pro competitive benefits of this combination,” said T-Mobile CEO John Legere on Wednesday’s earnings call.

Earlier in the day, Sprint made its own pitch for the deal as it reported its own modest subscriber growth.

“The combined company will put America first and force the competition to invest,” Sprint CEO Michael Combes said in a conference call, making the case for the merger.

T-Mobile is starting to invest heavily in 5G, the next generation of wireless technology, and earlier this week announced a new $3.5 billion 5G alliance with Nokia.

On the call Wednesday, Legere teased T-Mobile’s “next industry shaking Un-Carrier move” coming in two weeks. Legere was cryptic but said to look out for the announcement August 15.

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