-Translation- AIS-CP 114/2006 August 25, 2006 Subject: Notification of the adjustment to exercise price and exercise ratio of ESOP Warrants Grant I, II, III, IV, and V To: President The Stock Exchange of Thailand According to the Board of Directors' Meeting of Advanced Info Service Public Company Limited (the "Company") No. 7/2006 held on August 15, 2006 passed a resolution to approve the dividend payment for the first half of 2006 to shareholders at the rate of 3.00 Baht per share, totaling 8,857.65 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 I, 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 I Before adjustment After adjustment Exercise price (Baht per share) 45.324 44.620 Exercise ratio (warrant : common shares) 1 : 1.05843 1 : 1.07512 Number of shares to be allotted (shares) 1,192,957 1,197,038* ESOP Grant II Before adjustment After adjustment Exercise price (Baht per share) 40.985 40.349 Exercise ratio (warrant : common shares) 1 : 1.05843 1 : 1.07512 Number of shares to be allotted (shares) 2,609,284* 2,647,160* ESOP Grant III Before adjustment After adjustment Exercise price (Baht per share) 87.816 86.453 Exercise ratio (warrant : common shares) 1 : 1.04525 1 : 1.06173 Number of shares to be allotted (shares) 8,614,961 8,744,089* ESOP Grant IV Before adjustment After adjustment Exercise price (Baht per share) 103.341 101.737 Exercise ratio (warrant : common shares) 1 : 1.03213 1 : 1.04841 Number of shares to be allotted (shares) 10,116,900 10,155,633* ESOP Grant V Before adjustment After adjustment Exercise price (Baht per share) 91.46 90.045 Exercise ratio (warrant : common shares) 1 : 1 1 : 1.01577 Number of shares to be allotted (shares) 10,138,500 10,298,384* Number of additional shares to be allotted after adjustment of exercise price and exercise ratio of ESOP (shares)Total 369,702 * Calculated from the remaining of unexercised warrants The new exercise price and new exercise ratio shall be effective immediately on August 25, 2006 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 Annual General Meeting of Shareholders for fiscal year 2007. Please be informed accordingly. Yours faithfully, -Signed- Somprasong Boonyachai (Mr.) Director Advanced Info Service Public Company Limited