ARRAY DIGITAL INFRASTRUCTURE, INC.

On August 1, 2025, United States Cellular Corporation changed its name to Array Digital Infrastructure, Inc. (Array). Array is used throughout this report even when referring to historical periods. On August 12, 2025, it is expected that the Array Common Shares ticker symbol on the New York Stock Exchange will change to "AD". The following discussion and analysis compares Array's financial results for the three and six months ended June 30, 2025, to the three and six months ended June 30, 2024. It should be read in conjunction with Array’s interim consolidated financial statements and notes included herein, and with the description of Array’s business, its audited consolidated financial statements and Management's Discussion and Analysis of Financial Condition and Results of Operations (MD&A) included in Array’s Annual Report on Form 10-K (Form 10-K) for the year ended December 31, 2024. Certain numbers included herein are rounded to millions for ease of presentation; however, certain calculated amounts and percentages are determined using the unrounded numbers.

This report contains statements that are not based on historical facts, which may be identified by words such as “believes,” “anticipates,” “estimates,” “expects,” “plans,” “intends,” “projects,” “will” and similar expressions. These statements constitute and represent “forward looking statements” as this term is defined in the Private Securities Litigation Reform Act of 1995. Such forward looking statements involve known and unknown risks, uncertainties and other factors that may cause actual results, events or developments to be significantly different from any future results, events or developments expressed or implied by such forward looking statements. See the disclosure under the heading Private Securities Litigation Reform Act of 1995 Safe Harbor Cautionary Statement elsewhere in this report for additional information.

The accounting policies of Array conform to accounting principles generally accepted in the United States of America (GAAP). However, Array uses certain “non-GAAP financial measures” in the MD&A and the business segment information. A discussion of the reasons Array determines these metrics to be useful and reconciliations of these measures to their most directly comparable measures determined in accordance with GAAP are included in the disclosure under the heading Supplemental Information Relating to Non-GAAP Financial Measures within the MD&A of this report.

General

Array leases and offers tower space to third-party tenants on 4,418 Array-owned towers, holds noncontrolling interests in wireless operating companies and holds certain wireless spectrum licenses not included in the sale of its wireless operations, which was divested on August 1, 2025. As of June 30, 2025, Array is an 82.5%-owned subsidiary of Telephone and Data Systems, Inc. (TDS).

Array Mission and Strategy

Array seeks to grow revenue in its Towers operations primarily through increasing third-party colocations on existing towers through providing unique tower locations, attractive terms and streamlined implementation to third-party wireless operators.

Array also holds noncontrolling interests in wireless operating companies that generate material amounts of income and cash distributions. Further, Array holds wireless spectrum that is subject to sale agreements described below, and additional wireless spectrum not subject to pending sale agreements that Array seeks to opportunistically monetize.

Through July 31, 2025, Array provided wireless communication services; these operations were disposed of on August 1, 2025, as discussed further below.

Announced Transactions and Strategic Alternatives Review

On August 4, 2023, TDS and Array announced that the Boards of Directors of both companies decided to initiate a process to explore a range of strategic alternatives for Array. On May 28, 2024, Array announced that its Board of Directors unanimously approved the execution of a Securities Purchase Agreement (Securities Purchase Agreement) by and among TDS, Array, T-Mobile US, Inc. (T-Mobile) and USCC Wireless Holdings, LLC, pursuant to which, among other things, Array agreed to sell its wireless operations and select spectrum assets to T-Mobile. The Securities Purchase Agreement also contemplated, among other things, a Short-Term Spectrum Manager Lease Agreement and Short-Term Spectrum Manager Sublease Agreements that would become effective at the closing date, which provide T-Mobile with an exclusive license to use certain Array spectrum assets and leases at no cost for up to one-year for the sole purpose of providing continued, uninterrupted service to customers. The sale of the wireless operations to T-Mobile was subject to the receipt of regulatory approvals and the satisfaction of customary closing conditions. As of June 30, 2025, the transaction did not meet the accounting criteria to be presented as discontinued operations. Regulatory approval was received in July 2025 and the closing occurred on August 1, 2025, as discussed further below.

On October 17, 2024, Array, and certain subsidiaries of Array, entered into a License Purchase Agreement (Verizon Purchase Agreement) with Verizon Communications Inc. (Verizon) to sell certain AWS, Cellular and PCS wireless spectrum licenses and agreed to grant Verizon certain rights to lease such licenses prior to the transaction close for total proceeds of $1,000 million. As of June 30, 2025, the book value of the wireless spectrum licenses to be sold was $586 million. The transaction is expected to close in the third quarter of 2026, subject to regulatory approval and other customary closing conditions, and the termination of the T-Mobile Short-Term Spectrum Manager Lease Agreement.

On November 6, 2024, Array, and certain subsidiaries of Array, entered into a License Purchase Agreement (AT&T Purchase Agreement) with New Cingular Wireless PCS, LLC (AT&T), a subsidiary of AT&T Inc. to sell certain 3.45 GHz and 700 MHz wireless spectrum licenses and agreed to grant AT&T certain rights to lease and sub-lease such licenses prior to the transaction close for total proceeds of $1,018 million, subject to certain purchase price adjustments. As of June 30, 2025, the book value of the wireless spectrum licenses to be sold was $860 million. The transaction is expected to close in 2025, subject to regulatory approval and other customary closing conditions.

The strategic alternatives review process is ongoing as Array works toward closing the Verizon and AT&T spectrum transactions signed during 2024, and continues to seek to opportunistically monetize its spectrum assets that are not subject to the Securities Purchase Agreement, the Verizon Purchase Agreement, or the AT&T Purchase Agreement.

Array incurred third-party expenses related to the announced transactions and strategic alternatives review of $12 million and$22 million for thethree and six months ended June 30, 2025, respectively, and$13 million and $21 millionfor thethree and six months ended June 30, 2024, respectively.

Subsequent Events

The following events occurred subsequent to June 30, 2025 and are not reflected in the financial results, statements, or footnotes (unless otherwise explicitly stated) for the three and six months ended June 30, 2025.

▪On July 14, 2025, Array completed the acquisition of King Street Wireless, Inc. and Sunshine Spectrum, Inc. for a total purchase price of $17 million, of which $10 million was paid in prior periods and $7 million was paid at time of closing. Following the acquisitions, King Street Wireless, King Street Wireless, Inc., Advantage Spectrum and Sunshine Spectrum, Inc., are no longer classified as variable interest entities (VIEs). The acquisitions result in the expected realization of certain deferred tax assets, and therefore Array expects to record a reduction to valuation allowance on deferred tax assets and associated discrete income tax benefit of approximately $50 million during the three months ending September 30, 2025.

▪On July 31, 2025, Array terminated the receivables securitization agreement. In addition, the USCC Master Note Trust, a special purpose entity used to facilitate securitized borrowings using equipment installment plan receivables, was dissolved and, therefore, the entity will no longer be classified as a VIE.

▪On August 1, 2025, the sale of the wireless operations to T-Mobile closed and Array received cash proceeds of $2,629 million. Array expects a cash income tax liability on the T-Mobile transaction of between $250 million and $300 million. The transaction included a debt exchange offer whereby debt issued by Array could be exchanged for debt issued by T-Mobile, which reduced the cash portion of the purchase price. The cash portion of the purchase price was also reduced by unearned contingent consideration of $89 million as well as other purchase price adjustments outlined in the Securities Purchase Agreement. The final cash proceeds are subject to adjustment according to the terms and conditions of the Securities Purchase Agreement. Array expects to record exit and disposal costs and recognize a loss on the transaction that will be based on the carrying value of net assets sold as of the close date. As of June 30, 2025, the carrying value of the net assets sold to T-Mobile was approximately $2,400 million.

▪The debt exchange offering period concluded on August 1, 2025 and resulted in the exchange of $1,680 million of long-term debt comprised of the following Array notes: $489 million of 6.7% Senior Notes, $394 million of 6.25% Senior Notes, $402 million of 5.5% March 2070 Senior Notes and $395 million of 5.5% June 2070 Senior Notes. As a result, on August 1, 2025, after the debt exchange, Array retained $364 million of senior notes, consisting of $55 million 6.7% Senior Notes, $106 million 6.25% Senior Notes, $98 million 5.5% March 2070 Senior Notes, and $105 million 5.5% June 2070 Senior Notes. The unamortized discount and debt issuance costs related to the exchanged debt was $48 million and will be recorded as interest expense during the three months ending September 30, 2025.

▪On August 1, 2025, Array and T-Mobile entered into a Master License Agreement (MLA), pursuant to which, among other things, T-Mobile has agreed to license from Array, for a minimum of 15 years, space on a minimum of 2,015 existing or to-be-constructed towers owned by Array. The MLA also provided that T-Mobile extend the license term for approximately 600 towers owned by Array for a new 15-year term commencing on August 1, 2025. In addition, the MLA provides terms and conditions for T-Mobile, at its option, to revert certain equipment back to Array and would make Array responsible for any decommissioning, remediation, restoration, or disposal costs of such assets.

▪The closing of the T-Mobile transaction triggered the recognition of certain cash and non-cash obligations. Such obligations include contingent advisory fees, employee compensation and severance, employee stock award costs, debt extinguishment, income tax expense, administrative costs, restructuring expenses and other wind down costs. In future periods, Array also may incur significant decommissioning costs for certain towers and equipment, and such decommissioning costs may also include remaining obligations under related ground leases. These costs may have a significant impact on Array's financial statements in future periods.

▪On August 1, 2025, the Array Board of Directors declared a special dividend per Common and Series A outstanding share of $23.00 for shareholders of record on August 11, 2025, which will be payable on August 19, 2025.

▪On August 1, 2025, certain wireless service companies in Iowa that are not consolidated into the Array financial statements but are accounted for as equity method investments sold specific wireless assets and wireless customers to T-Mobile under separate asset purchase agreements. Array expects to receive a distribution from these transactions in August 2025.

▪On August 4, 2025, Array repaid the entire outstanding borrowings under all of its term loan agreements and export credit financing agreement of $863 million. Array expects to draw $325 million from its term loan agreement in August 2025.