i-mode (, ) is a Japan mobile internet (distinct from wireless internet) service operated by NTT DoCoMo. Unlike Wireless Application Protocols, i-mode encompasses a wider variety of internet standards, including web access, e-mail, and the packet-switched network that delivers the data. i-mode users also have access to other various services such as: sports results, , Mobile game, financial services, and ticket booking. Content is provided by specialised services, typically from the mobile carrier, which allows them to have tighter control over billing.
Like WAP, i-mode delivers only those services that are specifically converted for the service, or are converted through gateways.
i-mode phones have a special i-mode button for the user to access the start menu. There are more than 12,000 official sites and around 100,000 or more unofficial i-mode sites, which are not linked to DoCoMo's i-mode portal page and DoCoMo's billing services. NTT DoCoMo supervises the content and operations of all official i-mode sites, most of which are commercial. These official sites are accessed through DoCoMo's i-mode menu but in many cases official sites can also be accessed from mobile phones by typing the URL or through the use of QR code (a barcode).
An i-mode user pays for both sent and received data. There are services to avoid E-mail spam. The basic monthly charge is typically on the order of Japanese yen¥200300 for i-mode not including the data transfer charges, with additional charges on a monthly subscription basis for premium services. A variety of discount plans exist, for example family discount and flat packet plans for unlimited transfer of data at a fixed monthly charge (on the order of ¥4,000 per month).
Bandai and Namco launched content for i-mode in 1999. Bandai launched the Dokodemo Aso Vegas service in May 1999, reaching over paid subscribers by March 2000. In December 1999, Namco launched Namco Station, a mobile site for i-mode.
Since 2003, i-mode center is called CiRCUS, which consists of 400 NEC Corporation NX7000 HP-UX servers and occupies 4,600 m2 floor space in DoCoMo's Kawasaki office. The operation support system is called CARNiVAL, which is hosted in the Sanno Park Tower.
As of June 2006, the mobile data services I-Mode, EZweb, and J-Sky, had over 80 million subscribers in Japan.
i-mode usage in Japan peaked around 2008. On 29 October 2019, DoCoMo announced i-mode will end on 31 March 2026.
i-mode showed very fast take-up in the various countries where it was launched which led to more operators seeking to launch i-mode in their markets with the footprint reaching a total of 17 markets worldwide.
While the i-mode service was an exceptional service which positioned DoCoMo as the global leader in value add services, another key success factor for i-mode was the Japanese smartphone makers who developed state of the art handsets to support i-mode. As i-mode was exported to the rest of the world, Nokia and other major handset vendors who controlled the markets at the time, refused at first to support i-mode by developing handsets which support the i-mode service. The operators who decided to launch i-mode had to rely on Japanese vendors who had no experience in international markets. As i-mode showed success in these markets, some vendors started customizing some of their handsets to support i-mode, however, the support was only partial and came late in time.
While the service was successful during the first years after launch, the lack of adequate handsets and the emergence of new handsets from new vendors which supported new Internet services on one hand, and a change of leadership of i-mode in Docomo, lead to a number of operators to migrate or integrate i-mode into new mobile Internet services. These efforts were ultimately unsuccessful, and i-mode never became popular outside of Japan.
i-mode sponsored the Renault F1 team from 2004 to 2006.
i-mode was launched in the following countries:
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