MILLICOM INTERNATIONAL CELLULAR S.A. ANNOUNCES RESULTS FOR THE QUARTER ENDED MARCH 31, 2006

New York and Stockholm – April 26, 2006 – Millicom International Cellular S.A. (Nasdaq Stock Market: MICC and Stockholmsbörsen: MIC), the global telecommunications company, today announces results for the quarter ended March 31, 2006. • Quarterly total subscriber increase for Q1 06 of 962,707, bringing total subscribers to 9.9m • 20% increase in revenues for Q1 06 to $322m (Q1 05: $268m)† • 12 % increase in EBITDA for Q1 06 to $142m (Q1 05: $127m) † • Profit for Q1 06 of $33.4m (Q1 05: Loss $(11.3)m) • Earnings per common share for Q1 06 of $0.33 (Q1 05: $(0.11)) † Chief Executive Officer’s Review: • Increasing growth momentum with Q1 2006 pro forma* revenues and EBITDA up respectively by 48% and 55% year on year • EBITDA margin of 44% • 58% year-on-year increase in pro forma total subscribers • 10 million subscriber mark passed in April 2006 • Investments of $176 million including capex of $95 million in Q1 • Record cash upstreaming of $74 million in Q1 CONTACTS: Marc Beuls Telephone: +352 27 759 327 President and Chief Executive Officer Millicom International Cellular S.A., Luxembourg David Sach Telephone: +352 27 759 325 Chief Financial Officer Millicom International Cellular S.A., Luxembourg Andrew Best Telephone: +44 20 7321 5022 Investor Relations Shared Value Ltd, London Jon Coles / Tim Burt Telephone: +44 20 7404 5959 Brunswick Group Visit our web site at http://www.millicom.com Please see the attached document for the full press release