NTT Docomo to Launch Starlink Direct Mobile Satellite Service on April 27
NTT Docomo to Launch Starlink Direct Mobile Satellite Service on April 27
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Technology / Telecommunications / Space
NTT Docomo to Launch Starlink Direct Mobile Satellite Service on April 27
Japan’s second carrier to offer direct-to-smartphone Starlink connectivity opens the service free to all 22 million compatible subscribers — no application needed.
NTT Docomo announced on April 2, 2026, that it will launch “docomo Starlink Direct” — a satellite-to-smartphone communication service powered by SpaceX’s Starlink Mobile network — on April 27, 2026, making it available at no cost and with no separate application required to all compatible plan subscribers.
The service will be accessible to approximately 22 million docomo subscribers using compatible devices — including those on the online-only “ahamo” plan — at launch. Users will be automatically connected to the Starlink satellite network whenever they are outdoors in unobstructed conditions and outside terrestrial 4G/5G or Wi-Fi coverage areas.
Service Scope & Coverage
Docomo Starlink Direct covers all of Japan’s land territory and extends 12 nautical miles outward into its territorial waters, encompassing mountainous regions, remote islands, and open seas that have historically been outside the reach of conventional mobile networks. SMS transmission and data communication via compatible applications will both be free for the time being, with satellite data usage not counting toward a subscriber’s monthly data cap.
Service activates automatically when outdoors with clear sky visibility and no active 4G/5G or Wi-Fi connection. Indoors and obstructed environments are not supported. Coverage spans Japan’s entire landmass and coastal waters up to 12 nautical miles.
How to Activate
Three conditions must be met to use the service: the subscriber must possess one of the 84 docomo-certified satellite-capable handsets, must update their device to the latest software version, and must be using a docomo UIM card or eSIM that supports the service. iOS users must manually enable the “Satellite Communication” toggle in Settings after updating; Android users will be connected automatically following the system update.
| Detail | Information |
|---|---|
| Launch Date | April 27, 2026 |
| Underlying Network | SpaceX Starlink Mobile |
| Eligible Plans | All docomo plans, including ahamo |
| Cost | Free for the time being; no application required |
| Compatible Devices | 84 docomo-certified handsets |
| Coverage Area | All of Japan + 12 nautical miles offshore |
| Satellite Constellation | 650 LEO Starlink satellites |
| Data Usage Counting | Does not consume monthly plan allowance |
Supported Features
At launch, the service supports sending and receiving SMS, RCS, and iMessage messages; sharing real-time location; and transferring small files. Android users can additionally conduct basic information queries through Google’s Gemini assistant. Several docomo applications have been adapted for satellite use, including docomo email, SOS alerts, quick payment (partial functions), SmartNews, and location monitoring.
Emergency communication stands as the service’s most critical feature for Japan, a country frequently struck by earthquakes and typhoons. Docomo Starlink Direct supports reception of Japan’s official emergency notification system, including earthquake early warnings, tsunami alerts, and national protection information — capabilities that persist even when terrestrial base stations fail.
Starlink Direct provides a communication lifeline during disasters, precisely when terrestrial infrastructure is most likely to fail.
The Starlink Mobile Technology
The service is built on SpaceX’s Starlink Mobile constellation, currently comprising 650 low-Earth orbit satellites and described by SpaceX as the world’s only and largest satellite direct-to-cell network. Unlike traditional satellite phones requiring specialized terminals, Starlink Direct is compatible with standard LTE handsets. Each satellite is equipped with advanced phased-array antennas that function as a space-based mobile base station, with inter-satellite laser links enabling seamless global connectivity.
SpaceX has indicated that the forthcoming Starlink V2 satellite generation will increase single-satellite throughput by approximately 20 times, eventually enabling full 5G cellular connectivity and seamless switching between satellite and terrestrial networks — opening the door to video calls, media streaming, and remote work from anywhere.
Part of NTT’s Broader Space Strategy
The launch is a milestone within NTT Group’s “CONSTELLATION 89 (C89)” space initiative, which integrates satellite communications, high-altitude platform systems (HAPS), satellite remote sensing, and space-based data centers toward building what the company calls a “super-global network.” In addition to the SpaceX partnership, NTT has also signed a cooperation agreement with Amazon’s Kuiper Project — its first such deal in the Asia-Pacific region.
With the docomo Starlink Direct launch, NTT’s space strategy formally expands from enterprise-focused applications into the consumer market, signaling a broader industry shift toward ubiquitous satellite connectivity as an everyday utility rather than a specialized service.
The source article describes docomo Starlink Direct as “Japan’s first” Starlink direct-to-smartphone consumer service. This is inaccurate. KDDI’s au carrier launched “au Starlink Direct” on April 10, 2025 — making docomo the second major Japanese carrier to offer this service, not the first. SoftBank has also separately announced plans for a similar Starlink direct service, though pricing and a launch date had not been confirmed as of publication.
Context: Japan’s Satellite Race
The rapid rollout of direct-to-cell satellite services across Japan’s three largest carriers reflects growing competition and urgency around connectivity resilience. Japan’s geography — with large swaths of mountainous terrain and hundreds of inhabited remote islands — makes satellite backup especially valuable. The government has also been pushing carriers to ensure communications remain functional during the large-scale natural disasters that periodically devastate parts of the country.
As satellite constellations expand and handset compatibility broadens, the era of true anywhere-connectivity appears to be arriving faster than many in the industry anticipated just a few years ago.
