Results of Operations

4 Sep 2007 07:37

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 Period Previous (Decrease) the same (Decrease)Won,%) Period from period in from the Previous Fiscal Year same Period (%) ended period in December Fiscal 31, 2006 Year ended (%) December 31, 2006 (%) Operating Current -- -- -- -- --Revenue Total -- -- -- -- -- Operating Current -- -- -- -- --Income Total -- -- -- -- -- Ordinary Current -- -- -- -- --Income Total -- -- -- -- -- Net Current -- -- -- -- --Income Total -- -- -- -- -- Wireless 21,459,000 21,387,000 0.34% 19,982,000 7.39% Subscribers (End of August (End of July (End of August 2007) 2007) 2006)

ARPU (Average Won 44,081 Won 44,308 (0.51%) Won 43,968 0.26% Revenue per User) (July 2007) (June 2007)

(July 2006)

Average Wireless Won 10,889 Won 10,977 (0.80%) Won 11,164 (2.46%) Internet Revenue (July 2007) (June 2007)

(July 2006)per User

Outgoing Voice 199 minutes 211 minutes (5.69%) 198 minutes 0.51% MOU (Minutes of (June 2007) (May 2007)

(June 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 (822-6100-2400) (Tel.): Inquiries relating to Jinmo Kim, Manager, IR Team disclosure (822-6100-1620) (Tel.): 4. Other Relevant Matters: Please refer to the attached file for details. http://xprnnews.xfn.info/SK/20070904/Exhibit99.1.pdf *Related Disclosure: -- EXHIBIT INDEX Exhibit No. Description 99.1 Monthly Factsheet dated as of September 4, 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 President Date: September 4, 2007