-Translation- AIS-CP 013/2008 February 4, 2008 Subject: Report on the results of the exercise of warrants (ESOP Grant II, III, IV and V) in January 2008. To: The President The Stock Exchange of Thailand Advanced Info Service Public Company Limited ("the Company") issued and offered the warrants to purchase the Company's ordinary shares to directors and employees of the Company (ESOP). The details of Warrants are as follows: Details of ESOP Grant II Grant III Grant IV Grant V The number of warrants (units) 8,467,200 8,999,500 9,686,700 10,138,500 Issuing Date May 30,2003 May 31,2004 May 31,2005 May 31,2006 Exercise Price (Baht/Share) 38.322 82.111 96.628 85.523 Exercise Ratio (warrant : common share) 1:1.13197 1:1.11788 1:1.10385 1:1.06949 Maturity of Warrants 5 years from the issuing date The Company would like to report the results of the exercise of warrants (ESOP Grant II, III, IV and V) in January 2008 as follows: Outstanding of ESOP Grant II Grant III Grant IV Grant V No. of exercised warrants in this month (units) 19,600 197,600 - 8,400 No. of remaining unexercised warrants (units) 402,800 6,161,800 9,676,700 9,869,800 No. of shares derived from this exercise (shares) 22,186 220,890 - 8,982 No. of remaining shares reserved for warrants (shares) 497,562 6,922,436 10,455,826 9,996,532 Please be informed accordingly. Yours faithfully, -Signed- Mr. Vikrom Sriprataks Director Advanced Info Service Plc. Compliance Department Tel. 0-2687-4278, 0-2299-5014