-Translation- AIS-CP 086/2006 July 5, 2006 Subject: Resignation of Director of Advanced Info Service Plc. To: The President The Stock Exchange of Thailand Advanced Info Service Public Company Limited (ADVANC) would like to inform you that Mr. Arun Churdboonchart, Director, Independent Director, Chairman of the Audit Committee, Remuneration Committee and Nomination Committee of ADVANC resigned from such positions, effective on June 30, 2006. Yours faithfully, -Signed- Siripen Sitasuwan (Mrs.) Director Advanced Info Service Plc.