AIS 0101/1999 April 9, 1999 Re: ADVANCs Special Holidays Advanced Info Service Plc., would like to announce details of the Companys special holidays which are different to the Stock Exchange of Thailand holidays the Company will be closed for Songkran Festival holidays from April 12 to 14 1999 and open for its normal the business day at April 15, 1999 Best Regards, -signed- Jurairat Uhaka Executive Vice President - Portfolio Management