And NTT DoCoMo spent billions to upgrade its infrastructure to handle the high-speed wireless connections.
Even though Japanese consumers often flock to snap up high-tech products, DoCoMo's decision is risky.
We get a handle on the prototype UI inside DoCoMo's imaginary train right after the break.
DoCoMo showcased an eye-controlled game, alongside picture galleries, a web browser and a reader app.
ENGADGET: NTT DoCoMo's i beam tablet prototype is driven by your eyes (video)
In Japan, DoCoMo is the market leader and handset-makers and partners must dance to its tune.
ECONOMIST: Japan��s biggest mobile operator heads abroad once more
Ntt Docomo recently reported its financial results for the 9 months ended December 31st, 2011.
Ntt Docomo -adr had an annual average earnings growth of 5.4% over the past 10 years.
Its own model for DoCoMo's i-mode Internet service looks unlike anything it sells in Europe.
Hutchison has teamed up with Japan's NTT DoCoMo to roll out wireless data communications.
CNN: ASIANOW - Asiaweek | Intelligence | Business: Pick up the Pieces
So even if DoCoMo's ambitious plan succeeds, operators elsewhere could find it hard to imitate.
Whether DoCoMo succeeds will also depend on how it treats rival credit-card issuers and mobile operators.
There are reports that NTT Docomo, the biggest wireless carrier in Japan, will support Tizen.
FORBES: Tizen Rising, Ready To Challenge Apple And Google In 2013
DoCoMo plans to launch the world's first commercial next-generation services for mobile phones in Japan next year.
The deal generated some positive press for DoCoMo as well, as Evernote has taken off in Japan.
FORBES: Japan's DoCoMo Partners With Evernote To Sell Android Devices
Their preparations started in 1996, when DoCoMo laid the groundwork on i-mode, its spectacularly successful mobile Internet service.
Last June, Wolfson won a contract with Sharp to provide a component for its new DoCoMo series smartphone.
In Japan, Softbank shocked its giant rivals NTT-DoCoMo and KDDI in 2007 with the innovative White Plan.
Staying at home is unappealing to DoCoMo: most adults already own a mobile phone, and growth is stagnant.
ECONOMIST: Japan��s biggest mobile operator heads abroad once more
The dtab is compatible with a handful of carrier exclusive services, such as the dmarket and DoCoMo cloud.
DoCoMo has tackled this by making it possible to disable the FeliCa chip on a stolen handset remotely.
On Monday, after a four-month delay, Japan's NTT DoCoMo is rolling out the next generation of its wireless service.
Last week, DoCoMo's president Keiji Tachikawa said the company was "negotiating with good partners" to expand DoCoMo's mobile services.
Well, NTT DoCoMo is at it again, this time dabbling in the fine art of bicycle sharing.
ENGADGET: NTT DoCoMo Shared Bicycle Initiative hands-on (video)
In past years, NTT DoCoMo has been a high-profile participant at CTIA shows.
FORBES: Japanese Carrier NTT DoCoMo Pulls Out Of U.S. Wireless Show Due To Quake
STOCKHOLM--(BUSINESS WIRE)--Tobii Technology, the global leader in eye tracking and gaze interaction, today announced that partner NTT DOCOMO INC.
So opinion is divided as to whether DoCoMo's new foreign foray will be more successful than its last one.
ECONOMIST: Japan��s biggest mobile operator heads abroad once more
DoCoMo says it will make money from dividends, international roaming and technology licensing.
ECONOMIST: Japan��s biggest mobile operator heads abroad once more
The first shots of the 3g war will be fired in May, when DoCoMo launches the world's debut 3G service.
Translation from Japanese also is possible, so DOCOMO expects the app to be quite useful for foreign people visiting Japan.
"NTT DoCoMo is more or less taking the company (AOL Japan) over, " internet analyst Ortwin Gierhake of WestLB Securities said.
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