Docomo Starlink Mobile V2 is a fiscal-2028 roadmap, not today's travel internet

NTT Docomo announced on August 14 that it has agreed to use Starlink Mobile V2 for the next version of docomo Starlink Direct. The operator plans to add satellite voice calls, high-speed web browsing and direct links for IoT devices during fiscal 2028.

Those functions are not available now. Docomo's live service in Japan still supports messages and selected apps on eligible Docomo lines and compatible phones. Voice calls do not work over the satellite link, and Docomo has not announced the future price, exact launch date, eligible plans or final device list.

The traveler takeaway: this agreement improves Docomo's long-term dead-zone plan. It does not give a visitor's travel eSIM, overseas phone or foreign mobile account satellite calls or unrestricted internet today.

What Docomo actually announced on August 14

Docomo's official Mobile V2 announcement names three additions planned during fiscal 2028:

• voice calls;
• high-speed internet, including ordinary browser access; and
• direct communication with IoT devices.

The company says it will publish the conditions for each function after they are decided. That leaves the retail price, compatible phones, plan eligibility, coverage rules and precise start date open.

The words “fiscal 2028” matter. They describe Docomo's stated delivery window, not a promise that the upgrade starts on January 1, 2028. Travelers should wait for a dated launch notice and updated service page before treating calls or open web access as available.

Docomo also reported 6.5 million cumulative users of the current service in its first three months. Its footnote defines that figure as eligible customers with compatible devices who had connected by the end of July. It is evidence of substantial use, but it is not a count of tourists, foreign phones or subscribers receiving the future V2 functions.

For the wider market context, our GSA satellite-to-phone status report keeps launched, trialling and planned partnerships separate.

What works now and what remains planned

The safest reading is to keep the current service and the V2 roadmap in separate columns.

This distinction is more useful than describing the announcement as an immediate upgrade. A future browser feature does not make today's selected-app access “full internet,” and a planned voice service does not make the current link suitable for ordinary or emergency calls.

The current service has five eligibility gates

Docomo's live Starlink Direct service page sets out several conditions. A traveler has to pass all of them; matching only the handset name is not enough.

1. The line must be an eligible Docomo contract

The current service is for customers with a Docomo 5G or Xi contract. It is included across the operator's supported price plans, including ahamo, and no separate application is required. A Roaming eSIM that happens to use NTT Docomo as one terrestrial partner is not the same as holding that Docomo consumer contract.

2. The exact phone and sales region matter

Docomo maintains a changing compatible-device list. Its current page warns that overseas-market versions of some iPhones and Google Pixels may not work even when the model family appears on the list. The correct checks are model number, sales region, software version and SIM—not the logo on the phone box. Our phone eSIM compatibility guide covers the separate terrestrial-profile check.

3. The SIM or eSIM must support the service

Docomo's April launch notice says a compatible Docomo UIM card or eSIM is required. Some customers may need a free SIM exchange. Installing an unrelated data eSIM does not add Docomo's satellite entitlement to that profile.

4. Current data is limited to messages and supported apps

The service page lists messaging, location sharing, emergency alerts and selected apps. Some app functions are optimized or reduced for the satellite link, and supported app data requires a Docomo-specified ISP or APN. Docomo advises customers to install and update apps while they still have terrestrial mobile service or Wi-Fi.

5. It is a dead-zone service with an open-sky requirement

Current access is for unobstructed outdoor locations in Japan where Docomo 4G or 5G and Wi-Fi are unavailable. The published area includes Japanese territorial waters, described as up to 12 nautical miles from the baseline, but some places may still have no connection. It is not an indoor, aircraft or open-ocean coverage promise.

Can a visitor use docomo Starlink Direct?

Not merely by arriving in Japan. The published conditions require an eligible Docomo line, supported device, compatible SIM or eSIM, current software and the right connection environment.

A visitor who already holds an eligible Docomo or ahamo account may qualify if every current condition is met. A traveler carrying a home-country line or a separate visitor data eSIM should treat satellite access as unavailable unless that line's own operator explicitly publishes a compatible arrangement.

The network label can be confusing. A Japan Roaming eSIM may connect to NTT Docomo's terrestrial network where the selected package permits it. That does not turn the travel profile into a Docomo retail subscription, and it does not inherit docomo Starlink Direct.

Cross-border satellite access must also be stated by the operator. The au Starlink Direct international roaming report follows one explicitly documented arrangement; it is not evidence that Docomo's domestic service roams abroad. Japan's separate JAPAN Roaming emergency service is terrestrial cross-carrier support and should not be confused with either satellite product.

Why Roaming eSIM is the stronger option for everyday Japan data

Satellite direct-to-phone service and a travel eSIM solve different coverage problems. Docomo's service is designed for eligible customers outside its terrestrial and Wi-Fi coverage. Roaming eSIM is designed for the ordinary connected parts of a trip: airports, railway stations, cities and roads where a listed partner network is available.

🏆 Roaming eSIM wins for visitor data available today: the current public catalog lets a traveler compare live Japan allowances, validity, speed and price without taking a Docomo consumer contract. Docomo's satellite layer wins a different use case—eligible customers in a real terrestrial dead zone.

At 18:26 UTC on August 15, the public Roaming eSIM catalog returned 43 Japan packages. The records included terrestrial options on KDDI, NTT Docomo, Rakuten Mobile and SoftBank, depending on the selected plan. Some packages support top-up and some do not, so the live card remains the source for the chosen package. None of those records claims satellite access.

Compare the Japan Roaming eSIM for a country-only trip, the Asia Roaming eSIM for a supported multi-country itinerary, or the Global Roaming eSIM for a wider route. Check the exact country and network list before checkout.

If keeping the usual number matters, read the calls and SMS guide. The travel eSIM versus roaming guide explains how the home line and a data profile can share one trip without implying that either line has satellite access.

Ten questions travelers are asking about the Docomo satellite upgrade

1. Can I make a satellite call with Docomo today?

No. Docomo's current page says voice calls are unavailable over the satellite service. Voice is planned during fiscal 2028, with final conditions still to come.

2. Can I browse the normal web now?

Do not rely on it. The current service supports messages and selected apps. High-speed browsing belongs to the announced Mobile V2 roadmap.

3. Will a foreign-market iPhone or Pixel work?

It may not. Docomo specifically warns that overseas versions can fail even when the broader model name appears supported. Match the exact regional model against the current list.

4. Does a Japan travel eSIM receive Docomo satellite coverage?

No published source says it does. A travel profile can use a named terrestrial partner without becoming an eligible Docomo retail line.

5. Is docomo Starlink Direct free?

The satellite service is currently free for the time being and needs no separate application, but only for qualifying Docomo customers. The mobile plan itself still has its normal cost, and future Mobile V2 pricing is unannounced.

6. Will it work in Tokyo buildings or on a train?

The current service is intended for open outdoor dead zones, not locations where Docomo 4G or 5G or Wi-Fi is available. Buildings, roofs, terrain and movement can interfere with the sky view.

7. Does it work at sea?

The current published area includes Japanese territorial waters up to 12 nautical miles from the baseline, subject to signal and service conditions. That is not a cruise-wide or open-ocean data plan.

8. Can I use a hotspot over the satellite link?

Docomo's current public feature list does not promise general tethering. Selected-app access should not be treated as hotspot data. Wait for an explicit support rule before planning around it.

9. Will Mobile V2 automatically work on today's supported phones?

Docomo has not published the final V2 device list. Current compatibility does not guarantee eligibility for future voice or browser functions.

10. Does this replace offline maps or an emergency communicator?

No. Connection can depend on account status, device, sky view and capacity, and the current service does not carry voice calls. Save maps, tickets and emergency information offline. Remote or high-risk itineraries may still justify a dedicated safety device and route plan.

Docomo's current pages remain the source for eligibility and operation.

How to prepare if you already have an eligible Docomo line

1. Check the exact model and sales region on Docomo's current compatibility page.
2. Install the newest phone software while connected to normal mobile data or Wi-Fi.
3. Confirm that the Docomo UIM card or eSIM supports Starlink Direct; arrange an exchange if Docomo says one is needed.
4. Install and update any supported app before leaving terrestrial coverage.
5. Save maps, bookings, emergency contacts and the setup instructions offline.
6. Keep the normal terrestrial data plan active for the rest of the trip.

Do not test the service by deliberately entering an unsafe area. A satellite feature is a backup connection layer, not a reason to relax route, weather or emergency planning.

Sources and updates

We reviewed Docomo's August 14 Mobile V2 announcement, its current Starlink Direct service page, compatible-device page and April launch notice. The present-versus-future table uses only functions and conditions those pages publish. We did not infer a V2 price, launch day, visitor product, handset list, roaming arrangement or hotspot policy.

The results included Docomo and PR Times, Mobile World Live, IBTimes Japan, ITmedia Mobile, Keitai Watch, Jiji, Impress Watch, iPhone Wired and two news aggregators. Most report the agreement accurately, but few separate a foreign phone, visitor line, travel eSIM and current selected-app service in one decision guide.

We also checked the Roaming eSIM public Japan catalog on August 15. Inventory and retail terms can change; the live product page is authoritative at checkout. This page will be updated when Docomo publishes a launch date, retail terms, new international eligibility or a final Mobile V2 device and feature list.