(Bloomberg) -- GTCR, the Chicago-based private equity group, is buying a majority stake in Consumer Cellular Inc., the wireless company that’s popular with customers over age 50.

The deal values the closely held mobile company at roughly $2 billion, according to people with knowledge of the matter, who asked not to be identified because they weren’t authorized to speak publicly. John Marick, the carrier’s co-founder and chief executive officer, declined to disclose the terms.

A representative for Chicago-based GTCR didn’t respond to a request for comment.

Consumer Cellular, which was founded in Portland, Oregon, has no physical stores. The company sells wireless service using capacity from bigger mobile companies. It is focused on people age 50 and over, offering handsets that include flip phones with oversize buttons, according to its website.

Related coverage: GTCR seeks to raise $6.57 billion

Wireless executive Ed Evans will become CEO, though Marick said he will keep a board seat. Founded in 1995, Consumer Cellular has nearly 2,000 employees at offices in Phoenix and Tempe, Arizona; and Portland and Redmond, Oregon.

“We felt we could truly go through a smooth transition,” Marick said.

BofA Securities acted as exclusive financial adviser to Consumer Cellular. Kell, Alterman & Runstein LLP served as legal adviser. Credit Suisse and Raymond James served as financial advisers to GTCR, while Kirkland & Ellis LLP provided legal counsel.

GTCR has traditionally focused on five sectors: technology, business services, media and telecommunications, health care and financial services and technology. In July, GTCR agreed to sell Optimal Blue, a digital marketplace for mortgages, and in June announced the purchase of software maker Citra Health Solutions.

(Updates with CEO’s comments, adviser information starting in fifth paragraphs.)

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