i-mode Launches — The World's First Mass-Market Mobile Internet

On 22 February 1999, NTT DoCoMo launched a new service branded "i-mode". With the simultaneous release of the F501i handset from Fujitsu, a single button took the user into a DoCoMo-curated portal where mail was sent, official sites were read, and a mobile culture that would for thirty years be among the largest in the world began here.

At the time of launch, almost every other mobile-network operator had failed in the attempt to push past voice and SMS. WAP (Wireless Application Protocol), promoted in Europe around 2000, gave a poor browsing experience and never gathered subscribers. Around the same time, DoCoMo's answer to the same problem became i-mode.

Three Design Pillars

i-mode's success is most legible by contrast with WAP.

• Content was cHTML, a subset of HTML. The learning curve for existing web developers was minimal. WAP, by contrast, demanded its own language (WML) and never attracted enough developers.
• An official portal and revenue sharing with third parties. Being listed in DoCoMo's official menu meant immediate access to billing (charges added to the phone bill) and user acquisition. DoCoMo took a 9% billing fee and passed 91% to the content provider. Developers profited, and DoCoMo became a monopolistic platform operator.
• Packet-based pricing and free incoming. Charging by packets rather than minutes, with no fee for the receiving party, set the economic substrate for the entire Japanese "feature phone" culture of the 2000s.

Subscribers passed twenty million within three years and peaked at forty-nine million in 2010 — close to one in three people in Japan.

Birthplace of Emoji, Ringtones, and a Mobile Culture

The largest cultural legacy that i-mode bequeathed beyond Japan is, almost certainly, emoji.

In 1999, the DoCoMo engineer Shigetaka Kurita designed a set of 176 12×12-pixel pictographs. They shipped as part of the i-mode device font and became a vocabulary of symbols that could be sent in messages. In 2010, Unicode 6.0 encoded emoji; the iPhone and Android adopted them; emoji became a globally shared visual vocabulary. The original 176 characters entered the permanent collection of the Museum of Modern Art (MoMA) in New York in 2016.

Beyond emoji, i-mode incubated a great deal of culture: chaku-mero (musical ringtones), Mobage Town (the precursor of DeNA), Osaifu-Keitai (FeliCa-based contactless payments), and the mainstreaming of QR code reading. Through the 2000s, almost all of the Japanese mobile industry stood on the i-mode ecosystem.

A Temporary Mobile Future

Between roughly 2000 and 2005, the world's mobile industry observers regarded Japan as "a country reporting back from the future". Where Europe and North America were only beginning to push past SMS, Japanese high-school students were already routinely sending mail with emoji and decorative ringtones, middle-schoolers were playing Mobage, and office workers were tapping their phones to ride trains.

Masayoshi Son's SoftBank tried to export Japanese mobile culture to Europe, bought the Vodafone Japan business in 2006, and later secured the exclusive Japanese iPhone deal in 2008 — a sequence that draws directly on the cultural premium that i-mode had built up.

Why i-mode Failed Abroad

Despite its domestic success, i-mode almost entirely failed to export. DoCoMo licensed the i-mode model to operators in Europe and Asia through the 2000s, but subscribers never came; most licensees withdrew by the early 2010s.

The reasons compound.

• The closed vertical-integration model. A structure that depended on a DoCoMo-run official portal was not attractive to operators elsewhere. They wanted to be DoCoMo, not to be DoCoMo's licensee.
• cHTML's peculiarity. It was not strictly compatible with mainstream HTML and diverged from the path that HTML5 and the later mobile web took.
• The 2007 iPhone. The smartphone arrived as a carrier-independent general-purpose computer, and the i-mode platform-monopoly model collapsed at its foundation. DoCoMo migrated to "sp-mode" (for smartphones) in 2011-2013, gradually discontinuing i-mode-capable handsets.

2026 — The End

On 29 October 2019, DoCoMo announced officially that i-mode would terminate on 31 March 2026 — simultaneously with the sunset of the 3G FOMA frequency bands. DoCoMo chose 31 March 2026 as the date that drew a line under twenty-seven years.

At the time of shutdown, the user base that still used an i-mode-capable handset had shrunk to a few hundred thousand. The majority had already migrated to smartphones; the remainder were "feature-phone holdouts" or businesses that still depended on i-mode mail for operations.

What It Left Behind

The legacy of i-mode is not merely the inventory of concrete inventions — emoji, ringtones, contactless payments. It was the first commercial proof, anywhere in the world, that a mobile device could be part of the internet. And it was the first template for the economic model of the later smartphone era: revenue sharing through an official store, an ecosystem of third-party developers.

When Apple stood up the iPhone and the App Store in 2007-2008, the team is widely reported to have studied the i-mode mechanism. The view that DoCoMo defined a platform-economy grammar that Apple re-implemented and deployed worldwide is not at all unusual within the industry.

Related Events

In the same January, Research In Motion in Canada had launched the BlackBerry 850; the two ways to read mail on a mobile device — i-mode and BlackBerry — were already running in parallel on opposite sides of the world. The structure of mobile portal and billing that i-mode defined would be re-implemented by another party with the opening of the App Store in 2008. For the wider lineage of handsets, see the history of mobile phones and smartphones.