-Translation- CP-AIS 049/2004 May 4, 2004 Subject: Report on the results of the exercise of warrants (ESOP Grant 1) in April 2004. To: The President The Stock Exchange of Thailand Advanced Info Service Public Company Limited ("the Company") issued and offered 14,000,000 units of warrants to purchase the Company's ordinary shares to directors and employees of the Company (ESOP Grant 1) on March 27, 2002. The exercise date will be made within the last five business days of every month between 9.00 a.m. and 4.00 p.m.. The exercise date of April was between April 26 - 30, 2004. The summary of terms and conditions of warrants are as follows: Exercise Ratio : 1 warrant per 1.01261 ordinary shares Exercise Price : Baht 47.402 per share. Maturity of Warrants : 5 years from the first date of the issuance and offering of warrants. Number of Ordinary : 14,078,260 shares. Shares Reserved for Warrants The Company would like to report the results of the exercise of warrants (ESOP Grant 1) in April 2004, as follows: The number of exercised : 1,137,600 units warrants in this month The number of remaining : 7,096,700 units unexercised warrants The number of ordinary shares : 1,151,940 shares derived from this exercise The number of remaining : 7,139,891 shares ordinary shares reserved for warrants Please be informed accordingly. Yours sincerely, -Signed- Mr. Anek Pana-Apichon Vice President Finance & Accounting Group Shin Corporation Public Company Limited Group Compliance Tel. 0-2299-5561