Results of Operations

2 Oct 2007 07:14

Preliminary Results of Operations (Fair Disclosure) \* The following estimates are subject to change based on the actual results of our business performance.

1. Details of Results of Operations (Unit: in Results of Results of Increase Results of Increase millions of Current Previous (Decrease) the same (Decrease)Won,%) Period Period from period in from the Previous Fiscal Year same Period (%) ended period in December 31, Fiscal 2006 (%) Year ended December 31, 2006 (%) Operating Current -- -- -- -- --Revenue Total -- -- -- -- -- Operating Current -- -- -- -- -- Income Total -- -- -- -- -- Ordinary Current -- -- -- -- --Income Total -- -- -- -- -- Net Current -- -- -- -- --Income Total -- -- -- -- --Wireless 21,606,000 21,459,000 0.69% 20,032,000 7.86% Subscribers (End of (End of (End of September August September 2007) 2007) 2006)

ARPU (Average Won 44,009 Won 44,081 (0.16%) Won 44,208 (0.45%) Revenue per User) (August 2007) (July 2007)

(August 2006)

Average Wireless Won 10,877 Won 10,889 (0.11%) Won 11,063 (1.68%) Internet Revenue (August 2007) (July 2007)

(August 2006) per User

Outgoing Voice 202 minutes 199 minutes 1.51% 202 minutes 0.00% MOU (Minutes of (July 2007) (June 2007)

(July 2006) Usage) 2. Details of Information provider: SK Telecom IR Team Disclosure Target audience of Securities analysts and disclosure: institutional investors. (Scheduled) information The above Information will be release date: released by email or at www.sktelecom.com after this disclosure is made. Event (Location): -- 3. Contact Person responsible for Tae Jin Park, Head of IR Team Details disclosure (Tel.): (822-6100-2400) Inquiries relating to Jinmo Kim, Manager, IR Team disclosure (Tel.): (822-6100-1620) 4. Other Relevant Matters: Please refer to the attached file for details.

http://xprnnews.xfn.info/SK/20071002/Exhibit99.1.pdf

*Related Disclosure: -- EXHIBIT INDEX Exhibit No. Description 99.1 Monthly Factsheet dated as of October 2, 2007 SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

SK Telecom Co., Ltd. (Registrant) By: /s/ Tae Jin Park (Signature) Name: Tae Jin Park Title: Vice PresidentDate: October 2, 2007