CONFORMED
COPY  Exhibit 12.1  CERTIFICATION  I, Marc Beuls, certify
that:  1.   
I have reviewed this annual report on Form 20-F of Millicom International
Cellular S.A.;  2.   
Based on my knowledge, this report does not contain any untrue statement of a material
fact or omit to state a material fact necessary to make the statements made, in
light of the circumstances under which such statements were made, not
misleading with respect to the period covered by this report;  3.   
Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects
the financial condition, results of operations and cash flows of the company as
of, and for, the periods presented in this report;  4.   
The companys other certifying officer(s) and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over
financial reporting (as defined in Exchange Act Rules 13a-15(f) and
15d-15(f)) for the company and have:  (a)         
Designed such disclosure controls and procedures, or caused such disclosure
controls and procedures to be designed under our supervision, to ensure that
material information relating to the company, including its consolidated
subsidiaries, is made known to us by others within those entities, particularly
during the period in which this report is being prepared;  (b)        
Designed such internal control over financial reporting, or caused such
internal control over financial reporting to be designed under our supervision,
to provide reasonable assurance regarding the reliability of financial
reporting and the preparation of financial statements for external purposes in
accordance with generally accepted accounting principles;  (c)         
Evaluated the effectiveness of the companys disclosure controls and procedures
and presented in this report our conclusions about the effectiveness of the
disclosure controls and procedures, as of the end of the period covered by this
report based on such evaluation; and  (d)        
Disclosed in this report any change in the companys internal control over
financial reporting that occurred during the period covered by the annual
report that has materially affected, or is reasonably likely to materially
affect, the companys internal control over financial reporting; and  5.   
The companys other certifying officer(s) and I have disclosed, based on
our most recent evaluation of internal control over financial reporting, to the
companys auditors and the audit committee of the companys board of directors
(or persons performing the equivalent functions):  (a)         
All significant deficiencies and material weaknesses in the design or operation
of internal control over financial reporting which are reasonably likely to
adversely affect the companys ability to record, process, summarize and report
financial information; and  (b)        
Any fraud, whether or not material, that involves management or other employees
who have a significant role in the companys internal control over financial
reporting.  Date: April 3rd,
  2008By:
  /s/Marc BeulsName: Marc BeulsTitle: Chief Executive Officer