WASHINGTON (Reuters) - The U.S. Justice Department has opened a probe of potential coordination by AT&T Inc (T.N), Verizon Communications (VZ.N), a telecommunications standards organization and potentially other providers to hinder consumers from easily switching wireless carriers, a person briefed on the matter said on Friday.

FILE PHOTO: An AT&T logo is pictured in Pasadena, California, U.S., January 24, 2018. REUTERS/Mario Anzuoni/File Photo

Verizon confirmed the government inquiry, calling it “much ado about nothing,” adding that it has been working with the Justice Department for several months “regarding the inquiry,” according to spokesman Rich Young.

The New York Times reported on Friday that the Justice Department had opened an investigation about five months ago after at least one device maker and one wireless carrier filed formal complaints with the Justice Department.

The Times said the Justice Department sent demands to AT&T, Verizon and the GSMA, an industry standards-setting group, on efforts to thwart a technology called eSIM.

FILE PHOTO: The Verizon logo is seen on the side of a truck in New York City, U.S., October 13, 2016. REUTERS/Brendan McDermid

The technology allows consumers to switch wireless providers without having to insert a new physical SIM card, making it easier to compare wireless networks and select service as desired.

“The reality is that we have a difference of opinion with a couple of phone equipment manufacturers regarding the development of e-SIM standards. Nothing more,” Verizon’s Young said.

News of the probe comes at a critical time for AT&T which is being sued by the Justice Department to stop its deal to buy media company Time Warner Inc (TWX.N).

The U.S. government has argued in a trial that is nearing completion that the proposed deal would

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