AT&T Results Presentation Deck

2Q21 Momentum Continued in Areas of Market Focus Postpaid Phone Subscribers Net Adds thousands millions 62.9 0.84% Wireless 63.5 6 64.2 64.8 65.5 Postpaid phone subscribers Postpaid phone churn 0.69% (151) 2Q20 3Q20 4Q20 1Q21 2Q21 2Q20 2Q21 789 July 22, 2021/ © 2021 AT&T Intellectual Property - AT&T Proprietary AT&T Fiber Subscribers millions 4.3 Fiber 31% 4.7 5.0 HI 2Q20 3Q20 4Q20 1Q21 2Q21 2Q20 2Q21 Fiber subscribers Penetration Net Adds thousands 5.4 5.2 36% + See notes slide 12 225 246 HBO Max HBO Max and HBO Subscribers millions 36.3 38.0 41.5 44.2 47.0 2Q20 3Q20 4Q20 1Q21 2Q21 Domestic HBO Max and HBO subscribers †1 AT&T

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