AT&T Results Presentation Deck

5G and Fiber 6 Postpaid Phone Subscribers millions 69.6 $55.43 71.3 4Q22 Postpaid phone subscribers Postpaid phone ARPU 7.2 $56.23 $64.82 AT&T Fiber Subscribers millions 8.3 4Q23 $68.50 4Q22 Fiber subscribers AT&T Fiber ARPU 4Q23 Mobility Service Revenues $ in billions $15.4 4Q22 * YOY change $1.4 $16.0 4Q22 *YOY change +3.9%* AT&T Fiber Revenues $1.7 $ in billions 4Q23 +22%* 4Q23 Ⓒ2024 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 12 Mobility EBITDA +3 $ in billions $7.9 51.4% 4Q22 $1.0 $8.4 EBITDA EBITDA Service Margin +3 31.2% 52.2% Consumer Wireline EBITDAŤ3 $ in billions 4Q22 4Q23 $1.1 33.1% 4Q23 EBITDA EBITDA Margin +3 AT&T

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