UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934 (Amendment No.     )

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Filed by a Party other than the Registrant  o
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o	Preliminary Proxy Statement
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o	Definitive Proxy Statement
x	Definitive Additional Materials
o	Soliciting Material under §240.14a-12
Telephone and Data Systems, Inc.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
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EXPLANATORY NOTE

This year, as permitted by rules of the Securities and Exchange Commission (“SEC”), Telephone and Data Systems, Inc. (“TDS”) has arranged to provide beneficial owners of shares held in “street name” by brokers, banks, or other nominees (“brokers”) with access to our proxy materials via the Internet, rather than sending them paper copies.   Accordingly, pursuant to SEC rules, on or prior to April 12, 2019, Broadridge Financial Solutions, Inc., as agent for brokers that hold TDS shares, will mail the accompanying Notice Regarding the Availability of Proxy Materials to all street name shareholders as of the record date of March 28, 2019. Such notice and our other proxy materials were posted on the Company’s website at investors.tdsinc.com/proxyvote on April 10, 2019.   As explained further in the accompanying Notice, such shareholders have the option of (1)   accessing the proxy materials online or (2)   requesting that paper copies of those materials be sent to them.

*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on May 23, 2019 TELEPHONE AND DATA SYSTEMS, INC. You are receiving this communication because you hold shares in the above named company. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. 0000414911_1 R1.0.1.18 See the reverse side of this notice to obtain proxy materials and voting instructions. Meeting Information Meeting Type: Annual Meeting For holders as of: March 28, 2019 Date: May 23, 2019Time: 9:00 AM CDT Location: The Standard Club 320 S. Plymouth Court Chicago, IL 60604

Before You Vote How to Access the Proxy Materials Proxy Materials Available to VIEW or RECEIVE: Have the information that is printed in the box marked by the arrow (located on the by the arrow (located on the following page) in the subject line. How To Vote Please Choose One of the Following Voting Methods marked by the arrow available and follow the instructions. 0000414911_2 R1.0.1.18 Vote In Person: If you choose to vote these shares in person at the meeting, you must request a "legal proxy." To do so, please follow the instructions at www.proxyvote.com or request a paper copy of the materials, which will contain the appropriate instructions. Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a voting instruction form. 1. Annual Report2. Notice & Proxy Statement How to View Online: following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET:www.proxyvote.com 2) BY TELEPHONE:1-800-579-1639 3) BY E-MAIL*:sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 09, 2019 to facilitate timely delivery.

The Board of Directors recommends that you vote FOR the following: 1. Election of Directors Nominees J. W. Butman K. D. Dixon 05 10 06 L. T. Carlson, Jr. 11 K. R. Meyers 07 L. G. Carlson 12 C. D. O'Leary 08 P. E. Carlson 09 W. C. D. Carlson The Board of Directors recommends you vote FOR the following proposal(s): 2Ratify accountants for 2019 3Advisory vote to approve executive compensation The Board of Directors recommends you vote AGAINST the following proposal(s): 4Shareholder proposal to recapitalize TDS' outstanding stock to have an equal vote per share NOTE: Such other business as may properly come before the meeting or any adjournment thereof. 0000414911_3 R1.0.1.18 Voting items

0000414911_4 R1.0.1.18 Voting Instructions

*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on May 23, 2019 TELEPHONE AND DATA SYSTEMS, INC. You are receiving this communication because you hold shares in the above named company. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. 0000414909_1 R1.0.1.18 See the reverse side of this notice to obtain proxy materials and voting instructions. Meeting Information Meeting Type: Annual Meeting For holders as of: March 28, 2019 Date: May 23, 2019Time: 9:00 AM CDT Location: The Standard Club 320 S. Plymouth Court Chicago, IL 60604

Before You Vote How to Access the Proxy Materials Proxy Materials Available to VIEW or RECEIVE: Have the information that is printed in the box marked by the arrow (located on the by the arrow (located on the following page) in the subject line. How To Vote Please Choose One of the Following Voting Methods marked by the arrow available and follow the instructions. 0000414909_2 R1.0.1.18 Vote In Person: If you choose to vote these shares in person at the meeting, you must request a "legal proxy." To do so, please follow the instructions at www.proxyvote.com or request a paper copy of the materials, which will contain the appropriate instructions. Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a voting instruction form. 1. Annual Report2. Notice & Proxy Statement How to View Online: following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET:www.proxyvote.com 2) BY TELEPHONE:1-800-579-1639 3) BY E-MAIL*:sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 09, 2019 to facilitate timely delivery.

The Board of Directors recommends that you vote FOR the following: 1. Election of Directors Nominees 01 C. A. Davis 02 G. W. Off 03 W. Oosterman 04 G. L. Sugarman The Board of Directors recommends you vote FOR the following proposal(s): 2Ratify accountants for 2019 3Advisory vote to approve executive compensation The Board of Directors recommends you vote AGAINST the following proposal(s): 4Shareholder proposal to recapitalize TDS' outstanding stock to have an equal vote per share NOTE: Such other business as may properly come before the meeting or any adjournment thereof. 0000414909_3 R1.0.1.18 Voting items

0000414909_4 R1.0.1.18 Voting Instructions