MIC reaches three million proportional subscribers

MIC REACHES THREE MILLION PROPORTIONAL SUBSCRIBERS New York, London and Luxembourg - May 20, 2003 - Millicom International Cellular S.A. ("Millicom" or "MIC") (Nasdaq: MICC), the global telecommunications investor, today confirms that at the end of April 2003, its operations in Asia, Africa and Latin America (excluding El Salvador) had exceeded 3 million subscribers on a proportional basis. Marc Beuls, President and CEO of MIC stated: "Reaching this milestone in proportional subscriber numbers reflects the continued strong underlying growth occurring in emerging markets and particularly in Asia and Africa." CONTACTS: Marc Beuls Telephone: +352 27 759 101 President and Chief Executive Officer Millicom International Cellular S.A., Luxembourg Andrew Best Telephone: +44 20 7321 5022 Shared Value Ltd, London Visit Millicom's homepage at http://www.millicom.com Millicom International Cellular S.A. is a global telecommunications investor with cellular operations in Asia, Latin America and Africa. It currently has a total of 16 cellular operations and licenses in 15 countries. The Group's cellular operations have a combined population under license (excluding Tele2) of approximately 382 million people. In addition, MIC provides high-speed wireless data services in five countries. MIC also has a 6.4% interest in Tele2 AB, the leading alternative pan-European telecommunications company offering fixed and mobile telephony, data network and Internet services to 17.7 million customers in 22 countries. The Company's shares are traded on the Luxembourg Bourse and the Nasdaq Stock Market under the symbol MICC. This press release may contain certain "forward-looking statements" with respect to our expectations and plans, strategy, management's objectives, future performance, costs, revenues, earnings and other trend information. It is important to note that our actual results in the future could differ materially from those anticipated in forward- looking statements depending on various important factors. Please refer to the documents we have filed with the U.S. Securities and Exchange Commission under the U.S. Securities Exchange Act of 1934, as amended, including our most recent annual report on Form 20-F, for a discussion of certain of these factors. All forward-looking statements in this press release are based on information available to us on the date hereof. All written or oral forward-looking statements attributable to Millicom International Cellular S.A, any Millicom International Cellular S.A members or persons acting on our behalf are expressly qualified in their entirety by the factors referred to above. We do not intend to update these forward- looking statements. ------------------------------------------------------------ This information was brought to you by Waymaker http://www.waymaker.net The following files are available for download: http://www.waymaker.net/bitonline/2003/05/20/20030520BIT00950/wkr0001.DOC http://www.waymaker.net/bitonline/2003/05/20/20030520BIT00950/wkr0002.pdf

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Millicom International Cellular S.A. is a global telecommunications group with mobile telephony operations in 14 countries in Latin America, Africa and Asia. It also operates cable and broadband businesses in five countries in Central America. The Group’s mobile operations have a combined population under license of approximately 267 million people.

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