AT&T CEO Randall Stephenson. (Photo via AT&T)

AT&T CEO Randall Stephenson knows a thing or two about wireless carrier mergers. He was leading the company when it tried to acquire T-Mobile back in 2011, but the transaction fell apart when the regulators expressed opposition and filed a lawsuit to block the deal.

Now that T-Mobile is on the verge of another merger — this time with Sprint, which would combine the third and fourth-largest U.S. carriers — Stephenson was asked about the pending deal on Wednesday at the Code Conference.

Stephenson, who took the helm of AT&T in 2007, said his competitors have a “tough hill to climb.” He didn’t say whether the merger should be approved or not.

“It’s a classic horizontal merger where you’re taking a competitor out of the marketplace,” he said. “But it is a very different marketplace today and there are a number of competitors out there in this space. A new competitor is coming into it every day, so it will probably get a different review than what our deal with T-Mobile received. But power to them, that they get it done.”

In April, T-Mobile announced plans to merge with Sprint after years of on-again, off-again talks. The two wireless carriers expect the merger to close by the first half of 2019, assuming they get regulatory approval.

The proposed $26.5 billion merger will create a more formidable rival to AT&T and Verizon Wireless. The combined company would be valued at $146 billion.

On a conference call with Sprint CEO Marcelo Claure last month, T-Mobile CEO John Legere — who would lead the new company — told reporters and analysts that the deal will create a “pro-consumer, strongly disruptive, revved-up competitor.” He expressed confidence that regulators will see consumer value in the deal and approve the acquisition.

Verizon Communications Chairman and CEO Lowell McAdam, meanwhile, isn’t losing sleep about the potential T-Mobile-Sprint tie-up.

“I think the U.S. has always been a competitive market,” he told GeekWire earlier this month. “Competition will probably be different if they’re together, but it’s still going to be a very competitive market. So we don’t care. It’ll take them two years — a year of approval and a year of integration — before they’re pointed into the wind, if you will. And we’re going to make the most out of those two years.”

Like what you're reading? Subscribe to GeekWire's free newsletters to catch every headline

Job Listings on GeekWork

Find more jobs on GeekWork. Employers, post a job here.