I-mode: A Brief History of Japan's Mobile Internet

I-mode was a revolutionary mobile internet service that was first launched in Japan in 1999. It was a major innovation in mobile technology and paved the way for the widespread adoption of mobile internet.

The service was developed by NTT DoCoMo, one of Japan's leading mobile phone operators, and was initially available on a limited number of handsets. These handsets were equipped with a special chip that enabled users to access the internet via a cellular network.

I-mode was a huge success in Japan, with over 40 million subscribers by 2002. This growth was largely driven by the service's user-friendly interface and the wide range of content available, including news, weather forecasts, and entertainment.

The service's popularity also led to the development of new business models, such as mobile commerce and mobile banking.

I-mode devices are a key part of the i-mode ecosystem. They come with a range of features, including a megapixel digital camera.

The displays on these phones are quite impressive, with some models offering as many as 262,144 colors. This is a significant upgrade from the standard 65,536 colors found in many other phones.

Some popular i-mode devices include the FOMA SA800i, Fujitsu F905i, and Motorola RAZR V3xx with i-mode. These phones offer a range of features and are popular among i-mode users.

Here are some examples of i-mode devices:

Using cHTML is a crucial aspect of i-mode devices, and it's designed to work within the limitations of cellular networks. i-mode employs Compact HTML (C-HTML), a simplified version of HTML similar to Wireless Markup Language (WML) used in WAP networks.

The basic operations in i-mode-compatible HTML websites can be performed using a combination of four buttons: cursor forward, cursor backward, select, and back (return to previous page). This makes navigation easy and intuitive.

Image maps and functions that require more intensive processing, such as frames and tables, are not included in the standard i-mode HTML specifications. This is due to the limited bandwidth of the cellular network.

The 'tel:' tag is used to hyperlink a telephone number, allowing users to initiate a call by clicking on a link. This feature is specific to i-mode-compatible HTML.

Following major features of HTML have not been included in i-mode compatible HTML, i.e., cHTML:

cHTML compliance hardware includes:

i-mode supports 256 color GIF files, with a maximum size of 94 x 72 dots.

i-Mode devices have been quite impressive in terms of their features and capabilities. Some typical features include a "clamshell" model with large displays, measuring 240 x 320 pixels, and in many models, a display on either side.

The displays of these devices normally have 65,536 colors but the newest models can show as many as 262,144 colors. This is a significant improvement in display quality.

Many i-Mode devices have a megapixel digital camera, which is a great feature for capturing high-quality photos on the go. This is especially useful for those who love taking pictures of their daily lives.

Here are some examples of i-Mode devices:

i-Mode Networks utilize two types of computers - servers and clients. Servers are the computers that hold information and are called DoCoMo i-Mode Centers.

The server computers, or DoCoMo i-Mode Centers, are the backbone of the i-Mode Network, holding vast amounts of information that users can access.

Clients, on the other hand, are the computers that we view the information on, and in the case of i-Mode, these are cellular i-Mode phones.

i-Mode Networks rely on two types of computers: servers and clients. Servers, specifically called DoCoMo i-Mode Centers, hold information.

These servers are connected to clients, which are typically cellular i-Mode phones that we use to view the information.

An i-Mode gateway is a crucial part of this network structure, translating wireless requests from mobile phones to the server.

This gateway sends information from the server back to the mobile phone, making it possible for users to access i-Mode enabled websites.

NTT DoCoMo provides a gateway to their users, connecting them to these websites and enabling them to access information on the go.

AppLi with Java is a service group that consists of software used with i-mode compatible mobile phone terminals. This software allows users to automatically update news and weather forecast displays. Downloading the software also enables users to play new games.

i-Mode enabled websites use C-HTML pages for transmission between handhelds and cell sites, which takes place via packet mode at high speed data transmission rates.

These websites can be accessed using a micro-browser on an i-Mode phone, which usually has a title bar with icons at the top of an LCD screen.

Users can access various services like weather forecasts, transportation schedules, data searches, and news updates through these icons.

i-Mode offers convenient functions that are enriching our lifestyles by crossing the conventional boundaries of mobile phone functions.

Some of the services available with i-mode include game playing, video viewing, and convenient access to the latest news and weather forecasts.

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i-mode was launched in Japan on 22 February 1999, marking the beginning of a new era in mobile data services. The content planning and service design team was led by Mari Matsunaga, while Takeshi Natsuno was responsible for the business development.

A few months after i-mode's launch, DoCoMo's competitors KDDI and J-Phone launched similar mobile data services, EZweb and J-Sky, respectively. These services would eventually be rebranded as Vodafone live! after Vodafone acquired J-Phone.

Here's a brief timeline of i-mode's key milestones:

i-mode usage in Japan peaked around 2008, but the service has continued to evolve over the years. As of June 2006, i-mode, EZweb, and J-Sky had over 80 million subscribers in Japan.

i-mode was launched in Japan on 22 February 1999, marking the beginning of a new era in mobile internet services.

The service was led by Mari Matsunaga's content planning and service design team, while Takeshi Natsuno was responsible for the business development. Keiichi Enoki oversaw the technical and overall development.

DoCoMo's competitors, KDDI and J-Phone, launched similar mobile data services, EZweb and J-Sky, respectively, just a few months after i-mode's launch.

Vodafone later acquired J-Phone, renaming the service Vodafone live!, although it was different from the service in Europe and other markets.

Bandai and Namco launched content for i-mode in 1999, with Bandai's Dokodemo Aso Vegas service reaching over 1 million paid subscribers by March 2000.

Here's a brief timeline of i-mode's milestones:

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, but the service is still going strong, with DoCoMo announcing that it will continue to operate until 31 March 2026.

NTT Docomo failed to capture global value despite being the first to launch a mobile internet service, i-Mode, in 1999.

The launch of i-Mode on February 22, 1999, marked the birth of the mobile internet, but its global expansion was limited.

i-Mode's popularity soon exceeded expectations, with Docomo having to limit new subscriptions at times.

The service was a forerunner of today's apps and app-ecosystems, with its Java-based i-Appli's paving the way for modern mobile applications.

Despite its success, Docomo struggled to expand globally, with no English-language website at the time, making Eurotechnology Japan KK's information one of the few sources of English-language information about i-Mode.

This lack of global presence made it difficult for Docomo to connect with major semiconductor firms, telecom operators, and investment banks that were interested in the service.

i-Mode is still a big business for Docomo, with its traditional flip-phones selling well in Japan.

Sales of traditional flip-phones are rising, while smartphone sales are temporarily dropping.

i-Mode will remain an important business for Docomo for some time to come.

The No. 1 top-grossing company globally is a Japanese company, despite Docomo's failure to capture global value from inventing and first introducing the mobile internet.

Five out of the top-10 globally top-grossing Apps for iOS and Google-Play combined are Japanese, according to App-Annie.

Japanese companies have managed to succeed globally in the app market, bucking the trend of Docomo's lack of success.

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i-Mode is still a big business for Docomo, with its mobile internet system still in use for traditional flip-phones that are popular in Japan.

These flip-phones are important to Docomo's market and have recently seen a rise in sales, even as smartphone sales experience a temporary dip.

Docomo's i-Mode was launched in 1999 and quickly gained popularity, with the company having to limit new subscriptions at times.

i-Mode's ecosystem and Java-based i-Appli's are seen as forerunners to today's apps and app ecosystems, with connections even drawn to Apple's iPhone.

At the time of its launch, there was limited information available about i-Mode in English, with Eurotechnology Japan KK's reports being a valuable resource for companies and institutions interested in the technology.

Today, i-Mode remains a significant business for Docomo, with KDDI's EZweb and SoftBank's Yahoo-mobile also still important players in the Japanese market.

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