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América Móvil, S.A.B. de C.V. Extends Expiration Date and Early Participation Consideration of its Exchange Offer for Debt Securities of Teléfonos de México, S.A.B. de C.V.

(Mexico City, February 17, 2011)—América Móvil, S.A.B. de C.V. (“América Móvil”)(NYSE: AMX) today announced the extension of the expiration date and the payment period for the early participation consideration of its previously announced private exchange offer (the “exchange offer”) to exchange any and all outstanding notes of Teléfonos de México, S.A.B. de C.V. (“Telmex”) listed in the table below (collectively, the “old Telmex notes”) for new notes of América Móvil (collectively, the “new América Móvil notes”) listed in the table below. The new América Móvil notes will be guaranteed by América Móvil’s subsidiary Radiomóvil Dipsa, S.A. de C.V.

The expiration date, previously scheduled for 5:00 p.m. (New York City time) on March 3, 2011, has been extended to 8:00 p.m. (New York City time) on March 3, 2011, unless further extended by América Móvil. In addition, América Móvil announced that all eligible holders (as defined below) who validly tender old Telmex notes at any time prior to or on the expiration date will receive the exchange consideration listed in the table below (which includes the early participation consideration). The withdrawal date occurred at 5:00 p.m. (New York City time) on February 16, 2011. All tenders of old Telmex notes not validly withdrawn prior to the withdrawal date are irrevocable. All the remaining terms and conditions of the exchange offer are unchanged.

As of 5:00 p.m. (New York City time) on February 16, 2011, according to Global Bondholder Services Corporation, the exchange agent for the exchange offer, América Móvil had received valid tenders of approximately U.S.$230 million aggregate principal amount of 5.50% Senior Notes due 2015 of Telmex (equal to approximately 28.86% of the aggregate outstanding principal amount of the 5.50% Senior Notes due 2015 of Telmex) and approximately U.S.$120 million aggregate principal amount of 5.500% Senior Notes due 2019 of Telmex (equal to approximately 24.12% of the aggregate outstanding principal amount of the 5.500% Senior Notes due 2019 of Telmex).

The new América Móvil notes have not been, and at the time of closing of the exchange offer will not be, registered under the U.S. Securities Act of 1933, as amended (the “Securities Act”). Accordingly, the exchange offer is directed only at holders of the old Telmex notes that are (a) “qualified institutional buyers” (“QIBs”) as defined in Rule 144A under the Securities Act or (b) persons other than U.S. Persons (as defined in Regulation S under the Securities Act) outside the United States.  Only noteholders that are eligible to participate in the exchange offer pursuant to at least one of the foregoing conditions (“eligible holders”) will be authorized to participate in the exchange offer. The new América Móvil notes will be subject to certain restrictions on transfer. 

The consummation of the exchange offer is not subject to any condition that a minimum amount of old Telmex notes of any series be validly tendered. The exchange offer is subject to certain customary conditions, which América Móvil may assert or waive in full or in part in its sole discretion. Although América Móvil has no present plans or arrangements to do so, it reserves the right to further amend, at any time, the terms and conditions of the exchange offer.

The new América Móvil notes have not been, and at the time of closing of the exchange offer will not be, registered under the Securities Act or any state securities laws.  The new América Móvil notes may not be offered or sold in the United States absent registration under the Securities Act or an applicable exemption from the registration requirements of the Securities Act. 

The new América Móvil notes may not be offered or sold in any jurisdiction in which such offer or sale is not authorized or to any person to whom it is unlawful to make such offer or sale.

This press release is neither an offer to purchase nor a solicitation of an offer to sell the old Telmex Notes or any other securities. The exchange offer is made only by means of an offering memorandum and the accompanying letter of transmittal, which will only be made available to eligible holders. 

About AMX

 AMX is the leading provider of wireless services in Latin America. As of December 31, 2010, it had 225 million wireless subscribers and 51.5 million fixed revenue generating units in the Americas.

Forward-Looking Statements

Certain statements contained in this press release may constitute “forward-looking statements”.  All statements in this press release, other than those relating to historical information or current condition, are forward-looking statements.  Such forward-looking statements are based on current expectations and involve inherent risks and uncertainties, including factors that could delay, divert or change any of them, and could cause outcomes and results to differ materially from current expectations.  No forward-looking statement can be guaranteed. Among other risks, there can be no guarantee that the exchange offer will be completed, or if it is completed, that it will close within the anticipated time period.  América Móvil undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events, or otherwise.