HELSINKI, October 15 /PRNewswire/ --

- Turkcell Surpasses 1.8 Million Mark in Mobile Transactions in 19 Months

HELSINKI, October 15 /PRNewswire/ --

Valimo, the selected technology provider for Turkcell, today announced
that after only 19 months from implementation, Turks have made over 1.8
million mobile transactions. With the Valimo solution Turkcell has provided
its 35.4 million customers unparalleled convenience.

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"Convergence of computing technologies is a global phenomenon and
emerging markets like Turkey are turning it into their advantage. As Turkcell
we introduced the mobile electronic signature (legally, the equivalent of a
written signature) with its improved security features for mobile phones, and
became the first company in the world to provide such a service .Our
subscribers have adopted mobile signature services fast. Turkcell Mobile
Signature has been both success story and a case study for other GSM
operators," says Cenk Serdar, Chief of Value Added Services from Turkcell.

Turkcell is a pioneer in implementing mobile signature technology for the
benefit of the consumer. Its subscribers can legally sign documents and
confirm transactions, including money transfers and internet banking,
securely with their mobile phones.

"The combination of the subscribers' own SIM card and a personal Signing
PIN to generate a mobile signature enables the highest available level of
security while maintaining excellent usability. The rapidly increasing amount
of transactions at Turkcell prove that mobile signature is the way of the
future," says Juha Murtopuro, CEO from Valimo.

Already more than 13 banks in Turkey allow their customers to use
Turkcell's Mobile Signature Service to authenticate themselves for online
banking and to digitally sign bank transactions. It is possible to withdraw
money from ATMs using mobile signatures. Customers can also apply for a loans
service on a bank's website through this service. If the amount requested is
approved, it can be withdrawn directly from an ATM with the mobile signature
service.

Turkish customs authorities also utilise mobile signatures to speed up
customs processing by allowing mobile transactions and signing of documents.
The service significantly eases foreign trade proceedings and prevents
smuggling.

About Turkcell

Turkcell is the leading GSM operator in Turkey with 35.4 million postpaid
and prepaid customers as of June 30, 2008 operating in a three player market
with a market share of approximately 56% as of March 31, 2008 (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 587 operators in 200 countries as of July 10, 2008.
Serving a large subscriber base in Turkey with its high-quality wireless
telephone network, Turkcell reported US$3.3 billion net revenues for the six
months as of June 30, 2008 and US$6.3 billion net revenues as of December 31,
2007 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 NYSE ("New York
Stock Exchange") and the ISE ("Istanbul Stock Exchange") since July 2000 and
is the only NYSE listed company in Turkey. 51.00% of Turkcell's share capital
is held by Turkcell Holding, 0.05% by Cukurova Group, 13.07% by Sonera
Holding, 2.32% by M.V. Group and 0.08% by others while the remaining 33.48%
is free float.

About Valimo

Valimo is your ID on-line. Valimo multipurpose ID using your mobile phone
provides more convenient and secure access to Internet services via computer
or mobile phone. Valimo's technology enables legally binding authentication
and transaction signing for online banking, payment confirmation, corporate
services and consuming online services and content.

Valimo solutions are used in many countries across Europe by mobile
operators, banks, corporations, eGovernment services and many other service
providers.

Valimo is headquartered in Helsinki, Finland.

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