AT&T Results Presentation Deck

7 1Q23 Mobility Results EBITDA Margin †1 Revenues EBITDA †1 $ amounts in billions Mobility $20.1 $7.7 38.6% 1Q22 595 $20.6 691 $8.4 40.7% Postpaid Phones 1Q23 424 0.76% 0.79% 0.81% 1Q21 1Q22 1Q23 Net additions (in thousands) Churn Strong revenue and EBITDA+¹ growth from high-quality subscriber and ARPU gains Wireless service revenues grew $759M, up 5.2% EBITDA¹ of $8.4B, up 8.0% Postpaid phone ARPU of $55.05, up nearly 2% Continued strong EBITDA and service margins from sustainable go-to-market strategy and cost transformation ● ● ● Consistent and disciplined execution as industry growth normalizes 424K postpaid phone net additions ● ● Continued low postpaid phone churn of 0.81%, as improved value proposition continues to resonate with customers © 2023 AT&T Intellectual Property. AT&T and globe logo are registered trademarks and service marks of AT&T Intellectual Property and/or AT&T affiliated companies. t See notes slide 10 AT&T

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