Exhibit 23.3

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Registration Statement of Telephone and Data Systems, Inc. on Form S-3 of our report dated February 28, 2014, relating to the financial statements of Los Angeles SMSA Limited Partnership for the year ended December 31, 2013, appearing in the Annual Report on Form 10-K of Telephone and Data Systems, Inc. for the year ended December 31, 2015, and to the reference to us under the heading “Experts” in the Prospectus, which is part of such Registration Statement.

/s/ Deloitte & Touche LLP

Atlanta, Georgia

May 20, 2016