169 163 151 148 136 Blended 186 181 170 168 156 VOU (GB/data sub/month) Postpaid 6.7 7.5 8.3 9.2 10.9 Prepaid 4.1 5.4 6.2 7.0 8.2 Blended 4.7 5.9 6.7 7.6 8.9 Device Penetration 4G-handset penetration 39

1 1Q19 MD&A Advanced Info Service Plc. Executive Summary Mobile growth remained soft from ongoing price competition Overall mobile market in 1Q19 reflected industry's effort in gradually

% Prepaid 16.1 17.3 20.9 21% 30% Blended 17.2 19.7 22.6 15% 32% Device Penetration 4G-handset penetration 76% 80% 81% - - Fixed Broadband Business FBB subscribers 1,255,500 1,535,900 1,668,900 33% 8.7% FBB

% Blended 17.0 18.2 19.7 16% 8.2% Device Penetration 4G-handset penetration 75% 79% 80% - - Fixed Broadband Business FBB subscribers 1,202,600 1,431,900 1,535,900 28% 7.3% FBB net addition 112,200 95,000

term. In addition to achieving revenue growth, the company-wide cost optimization is ongoing and translated into EBITDA expansion of +9% YoY and +2.4% QoQ to stand at Bt18,905mn, a reported margin of

12.7 Prepaid 5.4 6.2 7.0 8.2 9.2 Blended 5.9 6.7 7.6 8.9 10.1 Device Penetration 4G-handset penetration 42% 46% 50% 54% 57% Fixed Broadband Business FBB subscribers 481,500 521,200 571,800 623,400

, AIS fully expensed handset subsidy as either handset loss or marketing expense. With the effect of TFRS 15, key financial changes, compared to prior to 2019, will be as follows: a) Device subsidy

business sectors remained cautious in investment spending awaiting clarity on the political situation and ongoing geopolitical concerns that impact the global economy. The mobile industry demonstrated signs

99 -12% -5.5% VOU (GB/data sub/month) Postpaid 17.0 21.6 22.6 33% 4.8% Prepaid 13.8 16.5 16.3 18% -0.8% Blended 14.7 18.0 18.2 24% 0.8% Device Penetration 4G-handset penetration 75% 77% 79% - - Fixed

with ongoing data consumption demand, supported by rising tourist arrivals, benefiting the prepaid segment. Competition continued shifting towards value- based offerings with more benefits and