Exhibit 1

JOINT FILING AGREEMENT

The undersigned hereby agree and consent, pursuant to Rule 13d-1(k), to the joint filing of all Schedules 13D and/or Schedules 13G (including any amendments thereto) on behalf of such parties with respect to the Issuer.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

TELEPHONE AND DATA SYSTEMS, INC.

Signature:

/s/ Walter C. D. Carlson

Name/Title:

Walter C. D. Carlson, President and Chief Executive Officer

Date:

08/05/2025

TELEPHONE & DATA SYSTEMS INC VOTING TRUST 1989

Signature:

/s/ Walter C. D. Carlson

Name/Title:

Walter C. D. Carlson, Trustee

Date:

08/05/2025

Signature:

/s/ Letitia G. Carlson, M.D.

Name/Title:

Letitia G. Carlson, M.D.

Date:

08/05/2025

Signature:

/s/ Prudence E. Carlson

Name/Title:

Prudence E. Carlson

Date:

08/05/2025

Signature:

/s/ Anthony J.M. Carlson

Name/Title:

Anthony J.M. Carlson

Date:

08/05/2025

APPENDIX A

DIRECTORS OF TDS

(I)

(a)

Name:

Walter C. D. Carlson

(b)

Business Address:

Telephone and Data Systems, Inc.
30 North LaSalle Street
Suite 4000
Chicago, Illinois 60602

(c)

Present Principal Occupation or Employment:

President and Chief Executive Officer of Telephone and Data Systems, Inc.

(f)

Citizenship:

United States

(II)

(a)

Name:

LeRoy T. Carlson, Jr.

(b)

Business Address:

Telephone and Data Systems, Inc.
30 North LaSalle Street
Suite 4000
Chicago, Illinois 60602

(c)

Present Principal Occupation or Employment:

Vice Chair of Telephone and Data Systems, Inc.

(f)

Citizenship:

United States

(III)

(a)

Name:

Kenneth S. Dixon

(b)

Business Address:

Telephone and Data Systems, Inc.
30 North LaSalle Street
Suite 4000
Chicago, Illinois 60602

(c)

Present Principal Occupation or Employment:

President and Chief Executive Officer of TDS Telecommunications LLC, a wholly-owned subsidiary of Telephone and Data Systems, Inc.

(f)

Citizenship:

United States

(IV)

(a)

Name:

Letitia G. Carlson, M.D.

(b)

Business Address:

Telephone and Data Systems, Inc.
30 North LaSalle Street
Suite 4000
Chicago, Illinois 60602

(c)

Present Principal Occupation or Employment:

Physician and Clinical Professor at George Washington University Medical Faculty Associates

(f)

Citizenship:

United States

(V)

(a)

Name:

Prudence E. Carlson

(b)

Business Address:

Telephone and Data Systems, Inc.
30 North LaSalle Street
Suite 4000
Chicago, Illinois 60602

(c)

Present Principal Occupation or Employment:

Writer, art critic and art consultant

(f)

Citizenship:

United States

(VI)

(a)

Name:

Kimberly D. Dixon

(b)

Business Address:

Telephone and Data Systems, Inc.
30 North LaSalle Street
Suite 4000
Chicago, Illinois 60602

(c)

Present Principal Occupation or Employment:

Private Investor

(f)

Citizenship:

United States

(VII)

(a)

Name:

George W. Off

(b)

Business Address:

Telephone and Data Systems, Inc.
30 North LaSalle Street
Suite 4000
Chicago, Illinois 60602

(c)

Present Principal Occupation or Employment:

Private Investor

(f)

Citizenship:

United States

(VIII)

(a)

Name:

Christopher D. O’Leary

(b)

Business Address:

Telephone and Data Systems, Inc.
30 North LaSalle Street
Suite 4000
Chicago, Illinois 60602

(c)

Present Principal Occupation or Employment:

Senior Advisor of Twin Ridge Capital Management

(f)

Citizenship:

United States

(IX)

(a)

Name:

Wade Oosterman

(b)

Business Address:

Telephone and Data Systems, Inc.
30 North LaSalle Street
Suite 4000
Chicago, Illinois 60602

(c)

Present Principal Occupation or Employment:

Private Investor

(f)

Citizenship:

Canadian

(X)

(a)

Name:

Vicki L. Villacrez

(b)

Business Address:

Telephone and Data Systems, Inc.
30 North LaSalle Street
Suite 4000
Chicago, Illinois 60602

(c)

Present Principal Occupation or Employment:

Executive Vice President and Chief Financial Officer of Telephone and Data Systems, Inc.

(f)

Citizenship:

United States

(XI)

(a)

Name:

Dirk S. Woessner

(b)

Business Address:

Telephone and Data Systems, Inc.
30 North LaSalle Street
Suite 4000
Chicago, Illinois 60602

(c)

Present Principal Occupation or Employment:

Senior Vice President of Warburg Pincus

(f)

Citizenship:

German

(XII)

(a)

Name:

Napoleon B. Rutledge, Jr.

(b)

Business Address:

Telephone and Data Systems, Inc.
30 North LaSalle Street
Suite 4000
Chicago, Illinois 60602

(c)

Present Principal Occupation or Employment:

Senior Vice President and Chief Accounting Officer of McKesson Corporation, a global healthcare company

(f)

Citizenship:

United States

APPENDIX B

EXECUTIVE OFFICERS OF TDS


(I)	(a)	Name:
		Walter C.D. Carlson
	(b)	Business Address:
		Telephone and Data Systems, Inc. 30 North LaSalle Street Suite 4000 Chicago, Illinois 60602
	(c)	Present Principal Occupation or Employment:
		President and Chief Executive Officer of Telephone and Data Systems, Inc.
	(f)	Citizenship:
		United States
(II)	(a)	Name:
		LeRoy T. Carlson, Jr.
	(b)	Business Address:
		Telephone and Data Systems, Inc. 30 North LaSalle Street Suite 4000 Chicago, Illinois 60602
	(c)	Present Principal Occupation or Employment:
		Vice Chair of Telephone and Data Systems, Inc.
	(f)	Citizenship:
		United States
(III)	(a)	Name:
		Kenneth S. Dixon
	(b)	Business Address:
		Telephone and Data Systems, Inc. 30 North LaSalle Street Suite 4000 Chicago, Illinois 60602
	(c)	Present Principal Occupation or Employment:
		President and Chief Executive Officer of TDS Telecommunications LLC
	(f)	Citizenship:
		United States
(IV)	(a)	Name:
		Joseph R. Hanley
	(b)	Business Address:
		Telephone and Data Systems, Inc. 30 North LaSalle Street Suite 4000 Chicago, Illinois 60602
	(c)	Present Principal Occupation or Employment:
		Senior Vice President - Strategy and Corporate Development of Telephone and Data Systems, Inc.
	(f)	Citizenship:
		United States
(V)	(a)	Name:
		Douglas W. Chambers


			(b)			Business Address:
						Telephone and Data Systems, Inc. 30 North LaSalle Street Suite 4000 Chicago, Illinois 60602
			(c)			Present Principal Occupation or Employment:
						Interim President and Chief Executive Officer of Array Digital Infrastructure
			(f)			Citizenship:
						United States

APPENDIX C

TRUSTEES OF THE VOTING TRUST


(I)	(a)	Name:
		Walter C. D. Carlson
	(b)	Business Address:
		Telephone and Data Systems, Inc. 30 North LaSalle Street Suite 4000 Chicago, Illinois 60602
	(c)	Present Principal Occupation or Employment:
		President and Chief Executive Officer of Telephone and Data Systems, Inc.
	(f)	Citizenship:
		United States
(II)	(a)	Name:
		Letitia G. Carlson, M.D.
	(b)	Business Address:
		Telephone and Data Systems, Inc. 30 North LaSalle Street Suite 4000 Chicago, Illinois 60602
	(c)	Present Principal Occupation or Employment:
		Physician and Clinical Professor at George Washington University Medical Faculty Associates
	(f)	Citizenship:
		United States
(III)	(a)	Name:
		Prudence E. Carlson
	(b)	Business Address:
		Telephone and Data Systems, Inc. 30 North LaSalle Street Suite 4000 Chicago, Illinois 60602
	(c)	Present Principal Occupation or Employment:
		Writer, art critic and art consultant
	(f)	Citizenship:
		United States
(IV)	(a)	Name:
		Anthony J.M. Carlson
	(b)	Business Address:
		Telephone and Data Systems, Inc. 30 North LaSalle Street Suite 4000 Chicago, Illinois 60602
	(c)	Present Principal Occupation or Employment:
		Vice President of Organizational Transformation at TDS Telecommunications LLC
	(f)	Citizenship:
		United States

APPENDIX D


Name	Number of Common Shares Beneficially Owned as of Latest Practicable Date	Percentage of the Issuer’s Common Shares
Kenneth S. Dixon	-0-	—
LeRoy T. Carlson, Jr.	-0-	—
Letitia G. Carlson, M.D.	-0-	—
Prudence E. Carlson	-0-	—
Walter C. D. Carlson	44,628	*
Kimberly D. Dixon	-0-	—
Joseph R. Hanley	-0-	—
George W. Off	-0-	—
Christopher D. O’Leary	-0-	—
Wade Oosterman	-0-	—
Douglas W. Chambers	110,900	*
Vicki L. Villacrez	-0-	—
Dirk S. Woessner	-0-	—
Napoleon B. Rutledge, Jr	-0-	—
TOTAL	155,528	*

*Less than 1%

ARRAY DIGITAL INFRASTRUCTURE, INC. SCHEDULE 13D/A