As filed with the Securities and Exchange Commission on September 8, 2004

SECURITIES AND EXCHANGE COMMISSION

SCHEDULE TO

(Rule 14d-100)
Tender Offer Statement under Section 14(d)(1) of the Securities
Exchange Act of 1934

(Amendment No. 1)

TELE CENTRO OESTE CELULAR PARTICIPAÇÕES S.A.

TELESP CELULAR PARTICIPAÇÕES S.A.
BRASILCEL N.V.
PORTUGAL TELECOM, SGPS, S.A.
PT MÓVEIS, SGPS, S.A.
TELEFÓNICA MÓVILES, S.A.

Preferred shares, without par value
American Depositary Shares (as evidenced by
American Depositary Receipts),
each representing 3,000 preferred shares
(Title of Class of Securities)

87923P105 (American Depositary Shares)
(CUSIP Number of Class of Securities)

S. Todd Crider, Esq.
Simpson Thacher & Bartlett LLP
425 Lexington Avenue
New York, New York 10017
(212) 455-2000
(Name, Address and Telephone Number of Person Authorized to Receive
Notices and Communications on Behalf of the Person(s) Filing Statement)

Check box if the filing relates solely to preliminary communications made before the commencement of a tender offer.

Check the appropriate boxes to designate any transactions to which this statement relates:

Check the following box if the filing is a final amendment reporting the results of the tender offer. o

Table of Contents

INTRODUCTORY STATEMENT

     This amendment relates to the Tender Offer Statement on Schedule TO (the “Tender Offer Statement”) filed on September 1, 2004 regarding the tender offer by Telesp Celular Participações S.A., a corporation organized under the laws of the Federal Republic of Brazil, or “TCP,” to purchase for cash up to 84,252,534,000 preferred shares of Tele Centro Oeste Celular Participações S.A., or “TCO,” a corporation organized under the laws of the Federative Republic of Brazil, at a price of R$10.70 per 1,000 preferred shares without interest, net of applicable stock exchange and settlement fees, brokerage fees or commissions and withholding taxes.

     Subject to the terms and conditions of the tender offer, as set forth in the Tender Offer Statement, as amended hereby, the tender offer and the withdrawal rights expire on October 8, 2004, unless the offer is extended or earlier terminated. However, unless the offer is extended or earlier terminated, to participate in the tender offer, a holder must qualify for the tender offer (1) if a holder of American Depositary Shares, or “ADSs,” participating in the tender offer through The Bank of New York, as receiving agent, no later than 5:00 p.m., New York City time, on October 1, 2004 (such date, as it may be extended by TCP in its sole discretion, the “ADS Qualification Date”) and (2) if a holder of preferred shares, no later than 4:00 p.m., New York City time, on October 7, 2004 (such date, as it may be extended by TCP in its sole discretion, the “Share Qualification Date”). Withdrawals of ADSs by ADS holders who wish to participate in the tender offer through the receiving agent will not be accepted after 5:00 p.m., New York City time, on October 6, 2004, unless the offer is extended or terminated.

     To the extent permitted by applicable Brazilian and U.S. securities laws and the terms of the tender offer, TCP reserves the right, at any time and from time to time, in its sole discretion, (1) to extend the period of time during which the tender offer is open and thereby delay acceptance for payment of and payment for tendered shares, (2) to amend the tender offer in any respect and (3) to terminate the tender offer without purchasing any shares. In order to comply with the requirements of the U.S. Securities and Exchange Act of 1934, as amended, or the “Exchange Act,” and the regulations thereunder, any such extension, delay, termination, waiver or amendment will be followed as promptly as practicable by public announcement thereof, such announcement in the case of an extension to be made no later than 9:00 a.m., New York City time, on the next business day after the previously scheduled Share Qualification Date. Subject to applicable law (including Rule 14e-1 under the Exchange Act, which requires that material changes be promptly disseminated to shareholders in a manner reasonably designed to inform them of such changes) and without limiting the manner in which TCP may choose to make any public announcement, TCP will have no obligation to publish, advertise or otherwise communicate any such public announcement in the United States other than by issuing a press release to the Dow Jones News Service, the Public Relations Newswire or Business Wire.

Cover Page and Items 1 – 11.

     The cover page of the Tender Offer Statement is hereby amended to remove the reference to “Common shares, no par value.” In addition, Items 1 though 11 of the Tender Offer Statement are hereby amended to remove references to tenders, qualification for the tender offer and withdrawals by holders of common shares of TCO and to purchases of common shares in the tender offer. These references were included in error, as there is no tender offer for the common shares of TCO. Revised versions of the offer to purchase; form of letter of transmittal; letter to brokers, dealers, commercial banks, trust companies and other nominees; letter to clients for use by brokers, dealers, commercial banks, trust companies and other nominees; and notice of guaranteed delivery correcting these references are filed with this amendment.

Item 12. Exhibits

     Item 12 of the Tender Offer Statement is hereby amended to add Exhibit (a)(1)(H) and to file revised versions of Exhibits (a)(1)(A), (a)(1)(B), (a)(1)(C), (a)(1)(D), and (a)(1)(F). Item 12 is hereby amended and restated as follows:

3

SIGNATURE

     After due inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

4

5

6

7

8

EXHIBIT INDEX

9