AT&T Results Presentation Deck

3Q21 Solid Subscriber Gains in Areas of Market Focus Postpaid Phone Subscribers millions 63.5 5 Wireless 64.2 64.8 65.5 66.4 Postpaid phone subscribers Postpaid phone churn Net Adds thousands 645 0.69% 0.72% 1 ¡ll 3Q20 4Q20 1Q21 2Q21 3Q21 3Q20 3Q21 928 October 21, 2021 / 2021 AT&T Intellectual Property - AT&T Proprietary AT&T Fiber Subscribers millions 4.7 33% 5.0 Fiber 3Q20 4Q20 1Q21 5.4 5.2 il 37% 5.7 Fiber subscribers Penetration Net Adds thousands 357 + See notes slide 10 289 2Q21 3Q21 3Q20 3Q21 HBO Max and HBO Subscribers millions 56.9 HBO Max 38.0 60.6 41.5 63.9 67.5 69.4 44.2 47.0 45.2 3Q20 4Q20 1Q21 2Q21 3Q21 Domestic HBO Max and HBO subscribers International HBO Max and HBO subscribers †1 AT&T

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