MILLICOM TO ANNOUNCE SECOND QUARTER, 2006 RESULTS ON 24TH JULY

New York and Stockholm - July 7th, 2006 - Millicom International Cellular S.A. ("Millicom") (Nasdaq Stock Market: MICC, Stockholmsbörsen: MIC), one of the world's leading cellular operators in emerging markets, today announces that its results for the Second Quarter, 2006 will be released on Monday, 24th July, 2006. The company will host a conference call for the global financial community at 8.30 AM (ET) / 1.30 PM (UK) / 2.30 PM (CET). Registration for the conference call will be available nearer the time. The conference call will also be webcast in listen-only mode on Millicom’s website at 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 cellular operations and licenses in 16 countries. The Group’s cellular operations have a combined population under license of approximately 390 million people. This press release may contain certain “forward-looking statements” with respect to Millicom’s expectations and plans, strategy, management’s objectives, future performance, costs, revenues, earnings and other trend information. It is important to note that Millicom’s 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 that Millicom has filed with the U.S. Securities and Exchange Commission under the U.S. Securities Exchange Act of 1934, as amended, including Millicom’s 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 Millicom 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 Millicom’s behalf are expressly qualified in their entirety by the factors referred to above. Millicom does not intend to update these forward-looking statements. CONTACTS: Andrew Best Investor Relations Telephone: +44 20 7321 5022 Visit our web site at: www.millicom.com