Corporate history of NTT DoCoMo, Japan's leading mobile operator, from its founding in 1991 through its acquisition by NTT in 2020 and subsequent integration. The timeline covers technological innovations like i-mode and FOMA, market expansion, leadership changes, and financial milestones.
NTT DoCoMo is established as a subsidiary of Nippon Telegraph and Telephone (NTT) to operate mobile communications in Japan. It begins with analog cellular service. #telecom #history
NTT DoCoMo launches its first analog mobile phone service (TACS) in Japan, targeting early adopters. #telecom #mobile
DoCoMo introduces digital cellular service using the Personal Digital Cellular (PDC) standard, improving voice quality and capacity. #telecom #technology
The 'DoCoMo' brand is officially adopted, derived from 'Do Communications over the Mobile network', emphasizing mobile internet. #branding #telecom
DoCoMo launches the 'Digital Mova' series of mobile phones, becoming a market leader in Japan with sleek designs. #mobile #innovation
DoCoMo begins developing i-mode, a mobile internet platform that would revolutionize mobile data services globally. #internet #history
NTT DoCoMo launches i-mode in Japan, offering email, news, and web browsing on mobile phones. It becomes the world's first successful mobile internet service. #mobile #internet
NTT DoCoMo is listed on the Tokyo Stock Exchange (First Section), raising capital for expansion. Its market cap quickly grows. #finance #ipo
DoCoMo begins trials of FeliCa, a contactless mobile wallet technology, in partnership with Sony, leading to widespread adoption. #mobilepay #technology
DoCoMo launches FOMA, the world's first commercial W-CDMA 3G network, enabling high-speed data and video calls. #3g #telecom
DoCoMo licenses i-mode to European carriers (e.g., KPN, Telefónica), but adoption is modest due to competition and different market dynamics. #global #expansion
DoCoMo introduces mobile credit card payments via FeliCa, allowing users to make purchases at retailers. #mobilepay #innovation
DoCoMo announces a new growth strategy focusing on mobile multimedia, entertainment, and finance, aiming to become a 'life infrastructure' provider. #strategy #business
DoCoMo introduces DCMX, a mobile credit service that allows users to make purchases and later pay as a lump sum or in installments. #finance #mobile
Keiji Tachikawa, the driving force behind i-mode and FOMA, steps down as President and CEO, succeeded by Ryuji Yamada. #leadership #corporate
DoCoMo introduces two handset lines: STYLE (fashion-oriented) and PRO (high-end multimedia), diversifying its device portfolio. #mobile #design
DoCoMo announces plans for LTE (branded as Xi), promising peak download speeds of 100 Mbps, and begins field trials. #4g #telecom )
DoCoMo launches dmarket, a digital content store offering music, videos, e-books, and apps, competing with Apple's App Store. #digital #content
DoCoMo commercially launches Xi, its LTE service, initially in major cities, offering download speeds up to 75 Mbps. #4g #launch )
DoCoMo's network is severely disrupted by the earthquake and tsunami. The company quickly restores service and provides free Wi-Fi, demonstrating resilience. #disaster #response
DoCoMo launches docomo Cloud, offering storage, backup, and synchronization for users, integrating with its smartphone lineup. #cloud #technology
DoCoMo begins early 5G research and field trials, collaborating with vendors like Nokia and Ericsson to develop next-generation technology. #5g #research
DoCoMo partners with parent NTT to integrate artificial intelligence into services, including voice assistants and predictive analytics. #ai #partnership
DoCoMo achieves 10 Gbps in 5G field trials, demonstrating ultra-high-speed connectivity and low latency. #5g #technology
DoCoMo sets up an open lab to collaborate with partners on 5G use cases, including IoT, autonomous driving, and augmented reality. #5g #innovation
DoCoMo joins international 5G alliances and signs agreements with carriers like T-Mobile and Vodafone to promote global interoperability. #5g #collaboration
DoCoMo begins non-commercial 5G services for trial partners and selected customers, preparing for full launch. #5g #trial
NTT announces a tender offer to acquire the remaining stake in DoCoMo, aiming to streamline operations and invest in 5G and AI. #merger #acquisition
Following the successful tender offer, NTT acquires full ownership of DoCoMo, and its shares are delisted from the Tokyo Stock Exchange. #finance #delisting
DoCoMo launches commercial 5G services in Japan, initially covering major cities, offering speeds up to 4 Gbps. #5g #launch
DoCoMo is fully integrated into NTT Group as a wholly-owned subsidiary, with unified branding and operations. #integration #corporate
The company officially changes its legal name to NTT Docomo, reflecting its status as a fully owned NTT subsidiary. #rebranding
NTT Docomo launches a standalone 5G core network, enabling advanced features like network slicing and ultra-low latency. #5g #technology
NTT Docomo expands its 5G network to cover over 90% of Japan's population by the end of the year, focusing on rural and suburban areas. #5g #coverage
NTT Docomo begins research on 6G technologies, aiming for terabit speeds and AI-native networks. #6g #research
NTT Docomo partners with Google to develop new mobile services and leverage cloud-native infrastructure for 5G evolution. #partnership #innovation