-Translation- AIS-CP 029/2007 March 30, 2007 Subject: Notification of the adjustment to exercise price and exercise ratio of ESOP Warrants Grant II, III, IV, and V To: The President The Stock Exchange of Thailand According to Board of Directors' Meeting of Advanced Info Service Public Company Limited (the "Company") No. 2/2007 held on February 23, 2007 passed a resolution to approve the dividend payment for the second half of 2006 to shareholders at the rate of 3.30 Baht per share, approximately totaling 9,750 million Baht to the shareholder of the company. Upon the resolution, the Company has announced to distribute the dividends in excess of 50% of the net profit after income tax. This has affected on the adjustment to exercise price and exercise ratio of warrants to purchase the Company's ordinary shares, which were offered to directors and employees of the Company (ESOP) Grant II, III, IV, and V as stated in Clause 2.6 (v) of the Prospectus offering the ESOP Program of the Company. The ESOP warrant holders shall not be decreased their rights. The adjustment to exercise price and exercise ratio of ESOP Warrants were shown as follow; ESOP Grant II Before adjustment After adjustment Exercise price (Baht per share) 40.349 39.131 Exercise ratio (warrant : common shares) 1 : 1.07512 1 : 1.10857 Number of shares to be allotted (shares) 1,831,448 1,927,470* ESOP Grant III Before adjustment After adjustment Exercise price (Baht per share) 86.453 83.844 Exercise ratio (warrant : common shares) 1 : 1.06173 1 : 1.09477 Number of shares to be allotted (shares) 8,520,790 8,919,091* ESOP Grant IV Before adjustment After adjustment Exercise price (Baht per share) 101.737 98.667 Exercise ratio (warrant : common shares) 1 : 1.04841 1 : 1.08103 Number of shares to be allotted (shares) 10,116,900 10,471,613* ESOP Grant V Before adjustment After adjustment Exercise price (Baht per share) 90.045 87.328 Exercise ratio (warrant : common shares) 1 : 1.01577 1 : 1.04738 Number of shares to be allotted (shares) 10,138,500 10,618,862* Number of additional shares to be allotted after adjustment of exercise price and exercise ratio of ESOP (shares) Total 1,329,398 * Calculated from the outstanding of unexercised warrants The new exercise price and new exercise ratio shall be effective immediately on March 30, 2007 or the first day of XD sign posting onwards. As a result, provided that, the Company currently has sufficiently reserved shares for the exercise of ESOP warrants. The Company, therefore, will allot the additional shares to reserve for the new exercise ratio of ESOP Grant II, III, IV, and V in the 2007 Annual General Meeting of Shareholders. Please be informed accordingly. Yours faithfully, -Signed- Somprasong Boonyachai (Mr.) Director Advanced Info Service Public Company Limited