Exhibit 7.1

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES



|                                                                    |  |                                                        |     |  |      |  |             |  |  |  |      |  |  |  |             |  |      |  |     |  |  |  |            | 
|------------------------------------------------------------------- |  | ------------------------------------------------------ | --- |  | ---- |  | ----------- |  |  |  | ---- |  |  |  | ----------- |  | ---- |  | --- |  |  |  | ---------- | 
|                                                                    |  |                                                        |     |  | 2013 |  |             |  |  |  | 2014 |  |  |  |             |  | 2015 | 
|                                                                    |  | (amounts in thousands of Mexican pesos, except ratios) |    
|IFRS                                                                |  |                                                        |     |  |      |  |             |  |  |  |      |  |  |  |             |  |      |  |     |  |  |  |            | 
|Earnings:                                                           |  |                                                        |     |  |      |  |             |  |  |  |      |  |  |  |             |  |      |  |     |  |  |  |            | 
|Income before taxes on profits                                      |  |                                                        | Ps. |  |      |  | 105,367,219 |  |  |  | Ps.  |  |  |  | 87,205,269  |  |      |  | Ps. |  |  |  | 56,140,433 | 
|Plus:                                                               |  |                                                        |     |  |      |  |             |  |  |  |      |  |  |  |             |  |      |  |     |  |  |  |            | 
|Interest expense                                                    |  |                                                        |     |  |      |  | 25,790,120  |  |  |  |      |  |  |  | 33,134,918  |  |      |  |     |  |  |  | 32,599,765 | 
|Interest implicit in operating leases                               |  |                                                        |     |  |      |  | 816,338     |  |  |  |      |  |  |  | 849,904     |  |      |  |     |  |  |  | 777,378    | 
|Current period amortization ofinterest capitalized in prior
periods |  |                                                        |     |  |      |  | 2,570,415   |  |  |  |      |  |  |  | 2,953,503   |  |      |  |     |  |  |  | 3,026,890  | 
|Less:                                                               |  |                                                        |     |  |      |  |             |  |  |  |      |  |  |  |             |  |      |  |     |  |  |  |            | 
|Equity interest in net income of associates                         |  |                                                        |     |  |      |  | (36,282)    |  |  |  |      |  |  |  | 6,073,009   |  |      |  |     |  |  |  | 1,426,696  | 
|                                                                    |  |                                                        | Ps. |  |      |  | 134,507,810 |  |  |  | Ps.  |  |  |  | 130,216,602 |  |      |  | Ps. |  |  |  | 93,971,162 | 
|Fixed Charges:                                                      |  |                                                        |     |  |      |  |             |  |  |  |      |  |  |  |             |  |      |  |     |  |  |  |            | 
|Interest expense                                                    |  |                                                        |     |  |      |  | 25,790,120  |  |  |  |      |  |  |  | 34,134,918  |  |      |  |     |  |  |  | 32,599,765 | 
|Interest implicit in operating leases                               |  |                                                        |     |  |      |  | 816,338     |  |  |  |      |  |  |  | 849,904     |  |      |  |     |  |  |  | 777,378    | 
|Interest capitalized during the period                              |  |                                                        |     |  |      |  | 3,002,756   |  |  |  |      |  |  |  | 3,258,928   |  |      |  |     |  |  |  | 3,524,841  | 
|                                                                    |  |                                                        | Ps. |  |      |  | 29,609,214  |  |  |  | Ps.  |  |  |  | 37,243,750  |  |      |  | Ps. |  |  |  | 36,901,983 | 
|Ratio of earnings to fixed
charges                                  |  |                                                        |     |  |      |  | 4.5         |  |  |  |      |  |  |  | 3.5         |  |      |  |     |  |  |  | 2.5        |