<PAGE>
                                                                               .
                                                                               .
                                                                               .
                                   Exhibit 7.1
                          GRUPO IUSACELL, S.A. DE C.V.
          RATIO OF EARNINGS TO FIXED CHARGES PURSUANT TO MEXICAN GAAP
              THOUSANDS OF CONSTANT PESOS AS OF DECEMBER 31, 2003

<TABLE>
<CAPTION>

                                                                    1999          2000           2001         2002          2003
                                                                  ---------    -----------    ----------   -----------   -----------

<S>                                                               <C>          <C>            <C>          <C>           <C>
Income (loss) from continuing operations                            417,282    (1,233,720)     (549,522)   (2,166,982)   (4,708,741)
Add income tax, assets tax and deffered income tax                  165,838       171,823       160,908       115,647       310,377
                                                                  ---------    ----------     ---------    ----------    ----------
Pretax income (loss) from continuing operations                     583,120    (1,061,897)     (388,614)   (2,051,335)   (4,398,364)
Add:
Integral cost of financing (expense only)                           390,553     1,186,292     1,005,533       971,252       973,649
Amortization of debt expense and discount of premium                                                                             --
Interest portion of rent expense                                      3,108         3,108           777                          --
Losses from < 50% owned affiliates                                   24,952        20,438        41,976        16,709        33,137
Amortized portion of capitalized integral cost of financing          19,418        37,011        39,326        41,094        39,521
                                                                  ---------    ----------     ---------    ----------    ----------
ADJUSTED EARNINGS (A)                                             1,021,151       184,952       698,998    (1,022,280)   (3,352,057)

Fixed charges:
Integral cost of financing (whether expensed or capitalized)        390,553     1,186,292     1,005,533     2,040,892     1,718,161
Amortization of debt expense and discount or premium                     --            --            --            --            --
The interest portion of rent expense                                  3,108         3,108           777            --            --
Preffered stock dividend requirement                                                                                             --
                                                                  ---------    ----------     ---------    ----------    ----------
TOTAL FIXED CHARGES (B)                                             393,661     1,189,400     1,006,310     2,040,892     1,718,161


EARNINGS TO FIXED CHARGES (A/B)                                      2.5940       (0.1555)      (0.6946)      (0.5009)      (1.9510)

ADJUSTED PRETAX EARNINGS LESS FIXED CHARGES                         627,490    (1,004,448)     (307,312)   (3,063,172)   (5,070,218)

                                                                         (2)          (92)            1            (1)           --

</TABLE>