NEW YORK (

TheStreet

) -- California regulators moved closer to opening a review of

AT&T's

(T) - Get AT&T Inc. Report

proposed $39 billion acquisition of

T-Mobile USA

.

The California Public Utilities Commission on Thursday voted 5-0 to prepare a potential review of the deal that would begin following another vote set for June 9, an agency spokesman told

Bloomberg

.

If completed,

AT&T's buy of T-Mobile USA

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, a unit of

Deutsche Telekom

(DT) - Get Dynatrace, Inc. Report

, would create the largest U.S. wireless carrier. AT&T and T-Mobile USA are currently No. 2 and No. 4, respectively, based on subscribers.

Sprint

, the No. 3 U.S. wireless carrier, strongly opposes the deal and asked California regulators to review it last week.

"We believe a thorough investigation will reveal the negative implications for pricing, choice and innovation, critical to California's economy," Sprint said.

The Louisiana Public Service Commission on May 17 voted to open an inquiry into the merger.

-- Written by Joseph Woelfel

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Joseph Woelfel

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