Turkcell's Award-Winning Mobile Signature Service: Success Powered by Valimo

HELSINKI, January 25 -- Turkcell (NYSE: TKC), the leading mobile communications provider in Turkey, launched its mobile signature service on 20 February 2007. Since that day we have seen outstanding growth in services and users.

User uptake has been strong based on the number of different service providers supporting mobile signatures and the different applications available. Turkcell launched the service with 5 banks committed to using mobile signatures for their online banking security. By the end of 2007, 12 banks use mobile signatures: Akbank, Bank Asya, Denizbank, Garanti, HSBC, Kuveyt Turk, TEB, Turkiye Finans, Turkiye Is Bankasi, Finansbank, Sekerbank and Yapi Kredi.

Consumers use mobile signatures for digitally signing loan applications, online bank authentication, transaction confirmation, mBanking and cardless ATM usage.

In addition to banks, 2 brokerages are using mobile signatures for confirming trades: Ak Yatirim, Finans Invest; 2 municipalities (Fatih, Sisli) and 3 e-government services (Customs, Ministry of Health, Ministry of
Justice) use mobile signatures for user authentication and digital form signing.

According to Dr. Deniz Tuncalp, Mobile Signature Unit Manager at Turkcell, the 'Mobilimza' mobile signature service has now clocked over 500.000 signature requests from Turkcell's subscriber base.

Nationwide marketing campaigns feature full-page ads in magazines; and financial instutions advertise their mobile signature service in daily newspapers. Garanti bank, Turkiye Is Bankasi and Turkcell have launched commercials featuring mobile signatures and mobile banking services. Online banking marketing campaigns now include offers of free air-time when signing up for a new bankaccount and Turkcell's mobile signature service.

Turkcell's mobile signature service is based on technology provided Valimo Wireless, the market leader and unique provider of complete end-to-end mobile signature and identity solutions. Turkcell's mobile signature service based on Valimo technology has received three awards: the Active Academy Jury Special award during the Active ACADEMY 5th International Finance Summit held in December 2007 in Istanbul, the Turkish Electronics Industrialists' Association's Product Innovation Award and Gemalto's Most Innovative GSM Service 2007 award.

Valimo has been chosen by Frost & Sullivan's analyst team to receive the 2007 Frost & Sullivan European Excellence in Technology of the Year Award in network authentication technologies. This award recognizes the business potential of Valimo's end-to-end mobile signature and identity solution.

Valimo is also a finalist in the category of Most Innovative Consumer Application for the GSMA Mobile Innovation Global Awards, sponsored by Ericsson during the GSMA Mobile World Congress 2008 in Barcelona.

Meet Valimo at 3GSM Mobile World Congress, Fira de Barcelona, Spain,
11-14 February 2008, Hall 1 Booth 1 F62, or at Valimo's booth in the Mobile Innovation Marketplace in Hall 7.

About Turkcell

Turkcell is the leading GSM operator in Turkey with 34.8 million postpaid and prepaid customers as of September 30, 2007 operating in a three player market with a market share of approximately 58% as of June 30, 2007 (Source:
The Telecommunications Authority). In addition to high-quality wireless telephone services, Turkcell currently offers General Packet Radio Service
("GPRS") countrywide and Enhanced Data Rates for GSM Evolution ("EDGE") in dense areas, which provide for both improved data and voice services.

Turkcell provides roaming with 565 operators in 196 countries as of November 7, 2007. Serving a large subscriber base in Turkey with its high-quality wireless telephone network, Turkcell reported US$4,521 million net revenue for the nine months ended September 30, 2007 and US$4,700 million net revenue for the year ended December 31, 2006 as per IFRS financial statements.

Turkcell has interests in international GSM operations in Azerbaijan, Georgia, Kazakhstan, Moldova, Northern Cyprus and Ukraine. Turkcell has been listed on the New York Stock Exchange ("NYSE") and the Istanbul Stock Exchange ("ISE") since July 2000 and is the only NYSE listed company in Turkey. 51.00% of Turkcell's share capital is held by Turkcell Holding, 4.22% by Cukurova Group, 13.07% by Sonera Holding, 4.07% by M.V. Group and 0.01% by others while the remaining 27.63% is free float.

About Valimo Wireless

Helsinki-based Valimo Wireless is the leading provider of mobile signature solutions for mobile operator, bank and corporate customers.

Valimo's solutions are used by more than 40 European and Middle Eastern customers to date, assuring protection against various security attacks like phishing, cost savings thanks to digitalization of various currently paper-based processes and introduction of new business cases enabled by the convenient mobile signing capability.

Valimo is growing strongly with offices in Finland, France, Germany, Sweden and Turkey.

For more information about Valimo, please visit www.valimo.com

Contact Turkcell
Doruk Arbay,
Corporate Communications
Tel: +90-212-313-2319
Email: doruk.arbay@turkcell.com.tr

Deniz Tuncalp, Value Added Services
Tel: +90-212-3132554
Email deniz.tuncalp@turkcell.com.tr

Valimo Wireless
Tapio Vailahti
CEO, Valimo
Tel: +358-9-4365-0080

Source: Valimo Wireless


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