NOTICE OF SECOND QUARTER 2012 RESULTS AND PRESENTATION

Stockholm, June 20, 2012 – Millicom International Cellular S.A. (“Millicom”)
(Stockholmsbörsen: MIC) will announce its financial results for the second
quarter of 2012 on Wednesday, July 18, 2012 at 8.00 am (Stockholm) / 7.00 am
(London).

The company will host a presentation and Q&A session for analysts and investors
at 1.00 pm (London) on Wednesday, July 18, 2012 at Goldman Sachs, Peterborough
Court, 133 Fleet Street London, EC4A 2BB.

The presentation will be webcast live, in listen-only mode, at www.millicom.com.

To attend the presentation, please register at:
MillicomQ212_Registration (http://client.sharedvalue.net/millicom/Q212/).
Contacts

Chief Financial Officer
François-Xavier Roger
Tel: +352 27 759 327

Investor Relations
Justine Dimovic
Tel: +352 27 759 479
Emily Hunt
Tel: +44 7779 018 539


About Millicom

Millicom International Cellular S.A. is a global telecommunications group with
mobile telephony operations in 13 countries in Latin America and Africa. It also
operates various combinations of fixed telephony, cable and broadband businesses
in five countries in Central America. The Group’s mobile operations have a
combined population under license of approximately 270 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., and Millicom
International Cellular S.A. employees or representatives 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.