-Translation- AIS-CP 160/2004 December 2, 2004 Subject: Report on the results of the exercise of warrants (ESOP Grant I and II) in November 2004. 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 ESOP Grant I ESOP Grant II The number of warrants 14,000,000 Units 8,467,200 Units Issue Date March 27,2002 May 30,2003 Exercise Price Baht 47.147 per share Baht 42.634 per share Exercise Ratio 1 warrant per 1.01751 ordinary shares Maturity of Warrants 5 years from the first date of the issuance and offering of warrants. The Company would like to report the results of the exercise of warrants (ESOP Grant I and II) in November 2004, as follows: Details ESOP Grant I ESOP Grant II The number of exercised warrants in this month 30,000 units 40,000 units The number of remaining unexercised warrants 5,724,500 units 6,634,400 units The number of ordinary shares derived from this exercise 30,525 shares 40,700 shares The number of remaining ordinary shares reserved for warrants 5,748,254 shares 6,656,463 shares Please be informed accordingly. Yours sincerely, -Signed- Mr. Somprasong Boonyachai Director Advanced Info Service Public Company Limited