ARRAY DIGITAL INFRASTRUCTURE, INC. — Regulatory Filings 2017

Jul 25, 2017

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United States Cellular Corporation

8410 W. Bryn Mawr Ave.

Chicago, IL 60631

773-399-8900

Fax: 773-399-8936

VIA EDGAR

July 25 , 201 7

Mr. Larry Spirgel

Assistant Director

Securities and Exchange Commission

100 F Street, N.E.

Mail Stop 3720

Washington, D.C. 20549

RE: United States Cellular Corporation Form 10-K for the Fiscal Year ended December 31, 2016 Filed February 24, 2017 File No. 001-09712

Dear Mr. Spirgel:

We have received your letter dated July 17 , 201 7 to Kenneth R. Meyers, Chief Executive Officer, of United States Cellular Corporation (the “Company”), relating to the above referenced filing. On behalf of the Company, t his letter is to advise you that we are currently preparing responses to your comment s and will seek to respond fully no later than August 7 , 201 7 . The C ompany is requesting additional time to respond because it is in the process of closing its books and completing financial statements for the second quarter of 201 7 . If you have any ques tions, please contact the undersigned at ( 312 ) 592 - 5301 .

Yours truly, United States Cellular Corporation
By:	/s/ Douglas D. Shuma
	Douglas D. Shuma Chief Accounting Officer

cc: Kenneth R. Meyers