Third Quarter 2025 Results November 7, 2025 Safe Harbor Statement Under the Private Securities Litigation Reform Act of 1995 All information set forth in this presentation about Telephone and Data Systems, Inc., including its subsidiaries Array and TDS Telecom, except historical and factual information, represents forward-looking statements. This includes all statements about the Company's plans, beliefs, estimates and expectations. These statements are based on current estimates, projections, and assumptio ...

Premier Insurgent Fiber Provider Key Priorities ✓ Build Fiber ✓ Operational Excellence ✓ Customer Obsession Third Quarter 2025 Financial Results Conference Call Presentation November 4, 2025 Together, Building the Future Safe Harbor Statement This presentation contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are based on assumptions and management's current expectations with respect to the future, involve certain risks ...

Financial Data and Key Metrics Changes - The company completed the sale of U.S. Cellular wireless business and certain spectrum assets to T-Mobile for $4.3 billion, which is expected to unlock significant shareholder value and strengthen the balance sheets of both Array and TDS [6][12][14] - Following the transaction, TDS's debt was reduced to approximately $364 million, with a plan to redeem about $1.1 billion in debt, resulting in annual interest savings of approximately $80 million and reducing the average cost of debt to just over 6% [12][14][15] - S&P raised TDS's credit rating to BBB- from BB, reflecting a strong balance sheet and growth outlook [19] Business Line Data and Key Metrics Changes - Array Digital Infrastructure now operates independently with approximately 4,400 towers and a new master license agreement with T-Mobile, which is expected to enhance revenue and profitability [7][26] - Third-party tower revenues increased by 12%, and the number of third-party colocations grew by 6% year-over-year [26][29] - TDS Telecom reported 27,000 new fiber service addresses added in the quarter, with a total of 10,300 fiber net additions, leading to a 19% growth in total fiber connections since last year [33][34] Market Data and Key Metrics Changes - The company anticipates receiving $2 billion from previously announced spectrum sales, with a portion expected later this year, subject to regulatory approvals [15][22] - The company is focused on monetizing approximately 70% of Array's total spectrum holdings, including transactions with AT&T and Verizon, which are expected to close in 2025 and 2026 [22][23] Company Strategy and Development Direction - The company aims to focus on its tower and fiber businesses, with plans to implement a regular dividend once spectrum transactions are completed [15][16] - Key strategic priorities include closing pending spectrum transactions, optimizing ground leases, and driving revenue growth through new colocations [24][25] - The company is evaluating M&A opportunities, particularly in fiber assets that synergize with existing properties [86] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the growth potential of the tower business and the fiber program, emphasizing the importance of the new T-Mobile master license agreement [7][26] - The company expects to incur additional wind-down costs as it transitions from a wireless service provider to an independent tower company, which may impact profitability in the near term [30] - Management highlighted the competitive landscape in expansion markets as favorable, with a focus on increasing penetration rates in newly launched fiber areas [74] Other Important Information - The company plans to maintain its preferred stock as foundational capital for its fiber program and has no immediate plans to redeem them [12][14] - The company is committed to a disciplined financial policy while maintaining a conservative balance sheet [14] Q&A Session Summary Question: Update on TDS Telecom's fiber expansion plans - Management indicated that there is significant opportunity to expand the fiber footprint and will provide updates in upcoming quarters [51][52] Question: Long-term leverage stabilization for TDS Telecom - Management expects to maintain leverage below 1.5 times while evaluating opportunities for growth and capital allocation [55] Question: Access to construction resources for fiber expansion - Management remains confident in achieving the target of 150,000 new fiber service addresses for the year, with ramping construction efforts [56][58] Question: Cohort analysis for fiber market penetration - Management is working on providing cohort analysis to investors, expecting around 25-30% penetration by month 12 and 40% by year five in expansion markets [60][62] Question: Update on mobile launch and pricing strategy - The company launched TDS Mobile in select markets and is testing aggressive pricing strategies, with potential price increases after two years [82][84] Question: M&A opportunities and asset profiles - The company is focused on fiber opportunities that are synergistic with existing properties and is in the early stages of considering M&A options [86]

Financial Data and Key Metrics Changes - The company reported a free cash flow of $79 million in Q1 2025, an increase of $18 million compared to the same quarter last year [16] - Total operating revenues decreased by 3% year over year, impacted by divestitures and declines in commercial and wholesale revenue [49] - Cash expenses increased by 6% or $11 million in the quarter compared to the prior year, with part of this increase attributed to a non-cash adjustment to stock-based compensation [49] Business Line Data and Key Metrics Changes - The company saw a 6% increase in third-party tower revenue due to new co-locations and escalators on renewed leases [15] - Fiber service addresses grew by 6% year over year, with 14,000 new addresses delivered in the quarter [39] - Residential broadband net additions were 2,800, with 8,300 coming from fiber markets, lower than prior quarters due to timing of service address delivery [40] Market Data and Key Metrics Changes - The company is experiencing competitive pressures in the broadband market, with aggressive pricing and promotional offers from competitors [17] - The demand for higher broadband speeds remains strong, with 82% of residential broadband customers taking 100 meg or higher [47] Company Strategy and Development Direction - The company is focused on completing the transaction with T-Mobile and repositioning the remaining business for future success [12] - There is an ongoing effort to expand the fiber program, which has increased the footprint by over 30% in the last three years [13] - The company plans to declare a special dividend to shareholders following the closing of the T-Mobile transaction, subject to board approval [12] Management's Comments on Operating Environment and Future Outlook - Management acknowledged increased uncertainties in the broader economy and markets but remains optimistic about the long-term potential of the tower business [15] - The company is focused on cost optimization and expects capital expenditures to decline in 2025 as planned 5G coverage builds are largely completed [16] - Management expressed confidence in achieving $100 million in annual cost savings by the end of 2028 through transformation efforts [41] Other Important Information - The company does not plan to redeem Series UU and Series BV preferred stock, viewing them as foundational capital [74] - The expected cash outflow related to severance obligations for employees not retained by T-Mobile is estimated to be between $60 million to $80 million [30] Q&A Session Summary Question: What is the timeline for the designated entity spectrum approval? - The timing is uncertain and dependent on regulatory approval by the FCC, but there is optimism for a positive outcome [60] Question: How should free cash flow be viewed going forward? - The reported free cash flow of $79 million is not necessarily a run rate, but capital expenditures are expected to be down in 2025, which is positive for free cash flow [62] Question: What are the expectations for the tower company reporting post-closing? - The company anticipates providing tower company reporting including AFFO and related metrics in the first quarter after the close [65] Question: How is the door-to-door sales effort performing? - The company has strengthened its sales teams and expects net adds to improve as fiber address delivery ramps up [68] Question: Why does US Cellular need to remain a public entity? - The incremental cost to operate as a public company is minimal, and there are no significant incentives to collapse the structure at this time [112]

Financial Data and Key Metrics Changes - Total operating revenues decreased by 3% year over year, impacted by divestitures and declines in commercial and wholesale revenue, as well as decreases in residential video and voice connections [44] - Free cash flow for Q1 2025 was $79 million, an increase of $18 million compared to the same quarter last year [13][19] - Cash expenses increased by 6% or $11 million compared to the prior year, with $4 million of this increase attributed to a cumulative non-cash adjustment to stock-based compensation [44] Business Line Data and Key Metrics Changes - Postpaid handset results showed year-over-year improvements, while third-party tower revenues increased by 6% due to new co-locations and escalators on renewed leases [12] - Fiber service addresses grew by 6% year over year, with 14,000 new addresses delivered in the quarter [33][42] - Residential broadband net additions were 2,800, with 8,300 coming from fiber markets, lower than prior quarters due to timing of service address delivery [34][38] Market Data and Key Metrics Changes - The company continues to face aggressive promotional competition in the wireless industry, with competitors offering multi-year price locks and aggressive pricing [14] - Demand for higher broadband speeds remains strong, with 82% of residential broadband customers taking 100 megabits or higher and 24% taking one gig or higher at the end of the quarter [42] Company Strategy and Development Direction - The company is focused on completing the proposed transaction with T-Mobile, which is expected to close in mid-2025, and is preparing for a smooth transition [9][16] - A special dividend to shareholders is anticipated following the closing of the T-Mobile transaction, with proceeds expected to be used to repay outstanding bank debt [10][18] - The fiber program has expanded the company's footprint by over 30% in the last three years, with further growth opportunities identified [11] Management's Comments on Operating Environment and Future Outlook - Management acknowledged increased uncertainties in the broader economy and markets but remains optimistic about the long-term potential of the tower business and fiber expansion [7][12] - The company is focused on cost optimization and expects capital expenditures to decline in 2025 as planned 5G coverage builds are largely completed [13][46] - Management expressed confidence in achieving $100 million in annual cost savings by the end of 2028 through transformation efforts [35][72] Other Important Information - The company does not plan to redeem Series UU and Series BV preferred stock, viewing them as foundational capital for future operations [10][68] - The expected cash income tax obligations related to the T-Mobile transaction are estimated to be between $225 million and $325 million [28][30] Q&A Session Summary Question: Timeline for designated entity spectrum approval - The timing is uncertain and dependent on regulatory approval by the FCC, but there is optimism for a positive outcome [52][54] Question: Free cash flow run rate - The $79 million in free cash flow is not necessarily a run rate, but capital expenditures are expected to be down in 2025, which is positive for free cash flow [55] Question: Debt exchange offer impact - The debt exchange offer will be launched about 50 days before the anticipated close, and the amount of debt exchanged will impact transaction proceeds [56][110] Question: Fiber net adds and sales efforts - Fiber net additions were lower due to timing of address delivery, but management expects improvements as construction activity ramps up [60][62] Question: Divestiture strategy and criteria - The company is focused on divesting non-core assets, particularly isolated copper markets without an economic path to fiber, ensuring that net proceeds exceed the present value of cash flows from continued operations [95][96]

Financial Data and Key Metrics Changes - Total operating revenues decreased by 3% year over year, impacted by divestitures and declines in commercial and wholesale revenue, as well as decreases in residential video and voice connections [47] - Cash expenses increased by 6% or $11 million compared to the prior year, with $4 million of this increase attributed to a cumulative non-cash adjustment to stock-based compensation [47] - Free cash flow for the first quarter was $79 million, an increase of $18 million over the same quarter last year [14] Business Line Data and Key Metrics Changes - Postpaid handset results showed year-over-year improvements, while third-party tower revenue increased by 6% due to new co-locations and escalators on renewed leases [13] - Fiber service addresses grew by 6% year over year, with 14,000 new addresses delivered in the quarter [45] - Residential broadband net additions were 2,800, with 8,300 coming from fiber markets, lower than prior quarters due to timing of service address delivery [36][62] Market Data and Key Metrics Changes - The company continues to face aggressive promotional competition in the wireless market, with competitors offering multi-year price locks and aggressive pricing [15] - Demand for higher broadband speeds remains strong, with 82% of residential broadband customers taking 100 megabits or higher and 24% taking one gig or higher at the end of the quarter [45] Company Strategy and Development Direction - The company is focused on closing the proposed transaction with T-Mobile and repositioning the remaining business for future success, including a potential special dividend to shareholders [10][18] - The fiber program has expanded the company's footprint by over 30% in the last three years, with further opportunities for growth [11] - The company is evaluating its portfolio to minimize exposure to copper markets without an economic path to fiber [97] Management's Comments on Operating Environment and Future Outlook - Management acknowledged increased uncertainties in the broader economy and markets but remains optimistic about the long-term potential of the tower business [13][17] - The anticipated closing of the T-Mobile transaction is expected to provide better competitive choices and connectivity experiences for customers [16] - Management expects to incur cash income tax obligations related to the gain on the sale of spectrum in the Verizon and AT&T transactions, estimated between $325 million to $375 million [33] Other Important Information - The company does not plan to redeem Series UU and Series BV preferred stock, viewing them as foundational capital going forward [69] - The company expects to incur severance obligations for employees not retained by T-Mobile, estimated between $60 million to $80 million [28] Q&A Session Summary Question: Timeline for designated entity spectrum approval - The timing is uncertain and dependent on regulatory approval by the FCC, but there is optimism for a successful outcome [56] Question: Free cash flow run rate - The $79 million in free cash flow is not necessarily a run rate, but capital expenditures are expected to be down in 2025, which is positive for free cash flow [58] Question: Debt exchange offer impact - The impact of the debt exchange offer on the purchase price is uncertain, but there is interest in retaining attractive debt [60] Question: Fiber net adds and sales efforts - Fiber net adds were lower due to timing of address delivery, but as construction ramps up, net adds are expected to follow [62] Question: Divestiture strategy for wireline and cable portfolio - The company is focused on divesting non-core assets, particularly isolated copper markets without an economic path to fiber [97]

Financial Data and Key Metrics Changes - In 2024, capital expenditures decreased by 24% on a consolidated level, contributing to an increase in free cash flow [10] - Adjusted EBITDA increased by 7% for the full year on a consolidated basis [11] - Free cash flow for 2024 was $280 million, an increase of $88 million over 2023 [37] Business Line Data and Key Metrics Changes - U.S. Cellular improved subscriber results and executed a strategic review, leading to a solid year in financial and operating results [26] - Postpaid handset gross additions increased by 16% year-over-year, while postpaid handset churn decreased by 14 basis points [34] - TDS Telecom increased residential revenues by 6% due to growth in broadband connections and average revenue per connection [49] Market Data and Key Metrics Changes - U.S. Cellular's fixed wireless surpassed 150,000 customers, indicating growth in that segment [27] - Data usage by customers rose 37% year-over-year, reflecting increased demand for services [28] - TDS Telecom's total operating revenues increased by 1% in the fourth quarter and 3% for the full year [55] Company Strategy and Development Direction - The company aims to optimize its portfolio to focus on growth areas, including the fiber strategy and tower business [9][15] - TDS Telecom plans to deliver 150,000 fiber service addresses in 2025, with a target of 80% of total addresses served by fiber [61][59] - The company is focused on maintaining a culture dedicated to serving customers, associates, communities, and shareholders [17] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the strategic transactions with T-Mobile and other spectrum deals, expecting to close by mid-2025 [21][38] - The company anticipates continued investments in customer retention and acquisition strategies, particularly in the fiber segment [30] - Management acknowledged challenges in the competitive environment but remains optimistic about the long-term outlook for the tower business [22] Other Important Information - The company has made significant investments in 5G mid-band deployment and fiber programs, increasing its footprint by nearly 30% over the past three years [10] - U.S. Cellular's equity method investment interests produced $169 million in cash distributions in 2024 [24] - The company expects to incur cash income tax obligations related to the gain on sale in the T-Mobile transaction in the range of $225 to $325 million [44] Q&A Session Summary Question: Why was now the right time for the leadership change? - Management indicated that the board felt it was the right time for a change due to the transformative nature of the ongoing transactions [79] Question: Will there be changes in tower reporting? - Management confirmed plans to provide AFFO reporting post-T-Mobile transaction, but structuring the tower business as a REIT is not currently on the agenda [83][85] Question: What is the long-term vision for TDS? - Management emphasized that achieving 2025 priorities will position the company well for long-term growth in both the tower and fiber business [115] Question: How will capital allocation priorities be managed? - Management noted that while specific guidance is premature, the tower business generates attractive cash flows, and there is potential for returning capital to shareholders [123] Question: What are the expectations for fiber service address growth? - Management clarified that the new fiber goals are based on ongoing expansion programs and the EA CAM program, with a focus on pacing spending according to financial capacity [89][92]