Germany's Siemens and Finland's Nokia are equipping T-Mobile's mobile phone network to speed up third-generation services such as Internet surfing and downloading movies in Germany and Austria.
Siemens said on Tuesday it was the main supplier to T-Mobile, the mobile phone unit of Deutsche Telekom, and a Siemens spokeswoman said that its part of the deal was worth an amount in the double-digit millions of euros.
T-Mobile confirmed that Siemens was the main supplier for upgrading its network to HSDPA (high speed downlink packet access) and said Nokia would also supply some parts.
Siemens said in a statement: "Starting with Germany and Austria, T-Mobile customers can now use their notebook or mobile phone to surf in the Internet at DSL (digital subscriber line) speeds and download large volumes of data such as movies or large e-mail attachments faster than before."
Telecoms operators hope that HSDPA, which promises to bring home broadband speeds to mobile devices, will encourage customers to access data while on the move.
Current third-generation networks, with their slower speeds, have failed to create a mass market for such services.
T-Mobile said its entire German third-generation network would be equipped with HSDPA by May at initial rates of up to 1.8 megabits per second, compared with 384 kilobits now.
By the end of the year transmission will be speeded up to 3.6 megabits per second, and after that it will be doubled again to 7.2 megabits per second.