Q2 2021 Competitive and Network Overview

Historical Financial Results Revenue (Ps. in billions) Residential RGU Totalplay (Units in millions) 23.9 +39% 7.7 19.6 +47% 25% 6.5 14.3 28% 10.6 3.9 33% 7.5 2.9 35% 75% 2.0 37% 72% 67% 63% 65% Dec-17 Dec-18 Dec-19 Residencial Dec-20 Empresarial TTM Jun-21 Dec-17 Dec-18 Dec-19 Dec-20 Jun-21 EBITDA & Margin (Ps. in billions) Residential Subscribers 9.8 +65% (Units in millions) 2.9 +46% 2.4 7.3 5.5 1.5 1.1 3.0 1.7 41% 0.8 38% 38% 28% 23% Dec-17 Dec-18 Dec-19 Dec-20 TTM Jun-21 EBITDA ◆ EBITDA Margin Dec-17 Dec-18 Dec-19 Dec-20 Jun-21 11 CAGR

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