2023 Financial Results

Appendix Subscribers (Thousands) Operating Data 3Q20 4Q20 1Q21 2Q21 3Q21 4Q21 1Q22 2Q22 3Q22 4Q22 YOY QoQ SKT MNO Subscribers 1) 29,034 29,089 29,308 29,383 29,422 29,696 29,832 30,250 30,440 30,452 Net adds 101 55 219 74 39 274 136 418 190 12 Activations 856 794 956 777 788 1,057 837 1,076 914 660 Deactivations 755 739 737 702 750 782 701 658 724 Monthly Churn 0.9% 0.8% 0.8% 0.8% 0.8% 0.9% 0.8% 0.7% 0.8% 2.5% A95.5% A93.4% A37.5% A27.8% 648 A17.2% A10.6% 0.7% Δ0.2%ρ 0.0% A0.1%p Handset subs 24,123 24,052 24,042 23,982 23,906 23,750 23,678 23,587 23,402 23,278 A2.0% Δ0.5% LTE subs 23,230 22,182 21,251 20,475 19,644 18,782 17,981 17,645 17,201 16,367 A12.9% A4.8% 5G subs 4,263 5,476 6,736 7,696 8,650 9,874 10,879 11,682 12,468 13,393 35.6% 7.4% Total Mobile Subs 2) 31,440 31,384 31,520 31,626 31,595 31,884 32,129 32,559 32,831 32,836 3.0% 0.0% SKB Pay TV Subscribers 8,522 8,586 8,686 8,806 8,913 9,000 9,094 9,167 9,250 9,323 3.6% 0.8% IPTV subs 5,532 5,657 5,782 5,920 6,035 6,137 6,246 6,328 9,416 6,504 6.0% 1.4% CATV subs 2,990 2,929 2,904 2,886 2,878 2,863 2,848 2,839 2,834 2,819 A1.5% Δ0.5% High speed internet 6,445 6,476 6,508 6,539 6,560 6,580 6,608 6,633 6,669 6,704 1.9% 0.5% CAPEX (KRWbn) SKT SKB 245 736 165 683 306 1,025 197 658 269 1,091 6.3% 306.3% 152 426 55 166 204 397 82 148 189 401 1.0% 111.8% 1) Excludes MVNO & other connections 2) Includes MVNO connections, excludes other connections ARPU (KRW) ARPU¹) ARPU including MVNO 3Q20 4Q20 1Q21 30,051 30,269 27,783 28,066 30,213 28,124 2Q21 3Q21 30,446 30,669 28,395 28,600 4Q21 30,740 28,820 1Q22 30,401 28,492 2Q22 30,656 28,706 3Q22 4Q22 30,633 30,495 28,636 28,495 YOY QOQ 10.8% Δ0.5% A1.1% Δ0.5% 1) Calculation of SKT MNO revenue (2G/3G/LTE/5G and loT): Includes revenue from voice/data service (excludes activation fees and interconnection revenue), and revenue from additional service, Reflected revenue discount (discounts from contract and product bundling), Excludes MVNO related revenue Calculation of SKT mobile subscribers (2G/3G/LTE/5G and loT): Based on MSIT subscriber statistics (average number of billed connections for the quarter) 20

View entire presentation