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Journey Japan
Ubigi is one of the most popular eSIM options if you are traveling to multiple destinations, and its NTT Docomo access makes it a solid choice for many travelers in Japan. However, if you are traveling specifically to Japan, other eSIMs may be a better fit, depending on where you are going and how you plan to use your data.
Some alternatives focus more on Japan or connect more directly to local networks, which can be a better fit if you want dependable connectivity while traveling between cities, visiting rural areas, or using Maps and translation apps in busy train stations. There are also other Japan eSIMs that offer unlimited data, more hotspot flexibility, or plans that better match the length of your trip.
In this guide, we’ll look at the best Ubigi alternatives for Japan, including our own Journey Japan eSIM and other providers we often see come up when travelers are choosing an eSIM for their trip.
1. Journey Japan eSIM
Journey Japan eSIM is our own eSIM service built specifically for travelers visiting Japan. Instead of offering plans across hundreds of destinations, we focus on connectivity within Japan, with plans that connect to major local networks including NTT Docomo and KDDI.
Fixed and Unlimited Data Plans
We offer both fixed-data and unlimited plans, so you can choose based on how much data you expect to use during your trip.
Fixed-data plans are a good fit if you mainly need data for Google Maps, messaging, translation, restaurant bookings, and general browsing. If you expect to stream, upload photos and videos, use your phone heavily throughout the day, or simply do not want to keep checking your remaining data, you can choose one of our unlimited plans instead.
Our Plans are available for trips of different lengths, including options for stays of up to 30 days or longer.
Coverage Across Japan
Journey Japan eSIM connects to NTT Docomo and KDDI, two of Japan's major mobile networks, with 5G, 4G, and LTE available depending on your location and device.
This is particularly useful if your itinerary goes beyond central Tokyo, Osaka, and Kyoto. If you need mobile data while riding trains between cities, navigating large stations, visiting smaller towns, or traveling through more rural parts of Japan, you can see a noticeable difference when using Journey Japan eSIM.
Hotspot Support
You can also use your Journey Japan eSIM as a hotspot when you need to connect another device.
This can be useful if you are traveling with a laptop or tablet, working during your trip, or need to temporarily share your connection with someone else. Hotspot allowances vary by plan, so check the plan details if tethering will be an important part of your trip.
Support and Travel Benefits
Because Journey Japan focuses specifically on Japan, our support centers on travelers using their eSIM while visiting the country.
You also get access to selected travel benefits and discounts in Japan, including offers from businesses and services you may use during your trip.
For travelers looking for an Ubigi alternative primarily for Japan, Journey Japan gives you a choice of fixed and unlimited data, access to major Japanese networks, hotspot support, and a service built around traveling within Japan.
Compare Journey Japan eSIM plans.
2. Airalo
Airalo is another well-known Ubigi alternative, particularly if Japan is only one stop on a longer international trip. It offers local eSIMs for Japan as well as regional and global plans, so you can potentially use the same provider across several destinations.
For Japan, Airalo offers its Moshi Moshi eSIM with larger fixed-data options, while its Discover plans cover more than 130 countries and can be useful if you are continuing on to other destinations after Japan. Some global plans also include calls and texts through Discover+.
You manage Airalo through its app, where you can install your eSIM, check your remaining data, and buy additional data on plans that support top-ups.
If you already use Airalo when traveling internationally or want one provider for a multi-country itinerary, it can be a convenient alternative to Ubigi. If your trip is entirely within Japan, however, it is also worth looking at providers that are more specifically focused on connectivity within Japan.
3. Holafly
Holafly is a popular Ubigi alternative if you want unlimited data for your trip to Japan and would rather choose your plan based on the number of days you are traveling instead of estimating how many GB you will need.
Its Japan eSIM includes unlimited mobile data and supports 4G, LTE, and 5G where available. Holafly connects to local networks including KDDI and SoftBank in Japan.
You can choose the number of days you need rather than buying a fixed data allowance, which can be convenient if you expect to use Maps, translation apps, social media, streaming, and other data-heavy services throughout your trip.
Holafly also includes its Always On feature with eligible eSIMs. This provides 1 GB of backup data each month that can remain available after your main plan ends or during supported layovers, as long as the eSIM stays installed.
Holafly is worth considering if unlimited data is your main priority and you do not want to monitor how many GB you have left while traveling around Japan. However, check the current hotspot allowance and fair-use terms before buying if you expect to tether a laptop or another device regularly.
4. Nomad
Nomad is another Ubigi alternative with both fixed-data and unlimited options for Japan. Its Japan eSIM connects to KDDI au and SoftBank, giving travelers access to two of the country’s major mobile networks.
Its fixed-data plans range from smaller options for light use to larger 20 GB and 50 GB plans, while unlimited plans are available for several trip lengths.
Nomad’s unlimited plans include a daily high-speed allowance, after which speeds are reduced until the allowance resets.
Nomad supports Hotspot and tethering, which makes it worth considering if you expect to connect a laptop or share your data with another device during your trip.
Nomad also offers regional plans that include Japan, including APAC and China-Japan-Korea options. That can make it a useful alternative to Ubigi if Japan is part of a wider trip through Asia rather than your only destination.
5. Saily
Saily is another Ubigi alternative if you want an eSIM that you can keep using across different destinations. It offers plans in more than 200 destinations, so it can be convenient if Japan is part of a longer international trip.
One of Saily’s main differences is the security features included with its plans. The app includes an ad blocker, web protection that blocks known malicious websites and trackers, and a virtual location feature that lets you route your traffic through another location.
Saily also lets you keep the same eSIM installed and add plans for future destinations rather than installing a new eSIM each time. Its plans support tethering, and connection speeds can include 3G, 4G, LTE, and 5G depending on the local network.
If you already use Saily for international travel or like having privacy and security features built into the same app as your eSIM, it can be a useful alternative to Ubigi. For a trip focused entirely on Japan, however, you may prefer an option that is built more specifically around Japanese networks and travelers.
6. Sakura Mobile
Sakura Mobile is a Japan-focused Ubigi alternative that offers eSIMs, physical SIM cards, and pocket WiFi for visitors. Its travel eSIMs are designed specifically for use within Japan, with English-language ordering and technical support.
Its unlimited eSIM connects to KDDI's au network and supports 5G and 4G, while Sakura Mobile also offers a 3 GB-per-day option that uses NTT Docomo. That gives travelers a choice between unlimited data and a daily data allowance depending on how they expect to use their phone.
Hotspot and tethering are supported, though the amount of data you can share depends on the plan you purchase. Sakura Mobile also provides detailed setup and troubleshooting information in English, which can be useful if you prefer support from a company that specializes in connectivity within Japan.
Sakura Mobile is particularly worth considering if your trip is entirely within Japan and you want a local-focused provider with multiple connectivity options. Unlike Ubigi, however, its travel service is intended for use in Japan rather than as a single eSIM you can use across several countries.
7. GigSky
GigSky is another Ubigi alternative worth considering if Japan is one part of a broader trip. It offers eSIM coverage in more than 200 countries and also has regional and global plans, so you can use the same provider across multiple destinations.
GigSky supports 4G and 5G connectivity where available and allows hotspot sharing, which can be useful if you need to connect a laptop or another device while traveling.
One feature that sets GigSky apart is its Cruise + Land plans. These plans keep you connected both on land and aboard supported cruise ships, with coverage across more than 290 ships and ports in more than 200 countries.
If you are visiting Japan as part of a longer international trip, especially one that includes a cruise, GigSky can be a more flexible alternative to Ubigi. If your trip is entirely within Japan, however, a Japan-focused provider may give you a more straightforward set of plans and support.
What to Consider When Choosing an Ubigi Alternative
When comparing Ubigi alternatives for Japan, look beyond the price of the plan. The right option depends on where you are traveling, how much data you use, and what you need your connection for during the trip.
Coverage in Japan: Check which Japanese networks the eSIM connects to, especially if you plan to travel beyond Tokyo, Osaka, and Kyoto. Coverage can matter more when you are traveling through smaller towns, rural areas, mountain regions, or between cities by train.
Fixed or unlimited data: A smaller fixed-data plan may be enough if you mainly use Maps, messaging, translation, and restaurant bookings. If you stream, upload photos and videos, use social media heavily, or rely on your phone throughout the day, an unlimited plan may be more convenient.
Unlimited data restrictions: “Unlimited” does not always mean unlimited high-speed data. Some providers reduce your speed after you use a certain amount each day, so check the fair-use policy before choosing a plan.
Hotspot and tethering: If you plan to work from your laptop, connect a tablet, or share data with another traveler, check whether hotspot use is supported and whether there is a separate tethering limit.
Length of your trip: Look at both the amount of data and how long the plan remains valid. A plan that works well for a week in Japan may not offer the same value for a three- or four-week stay.
Japan-only or multi-country travel: If Japan is your only destination, a provider focused specifically on Japan may make more sense. If you are continuing to South Korea, Singapore, Thailand, or other countries, a regional or global eSIM can be more convenient.
Setup and support: Most eSIMs are easy to install, but support becomes more important if you have trouble activating your plan after arriving. Check whether the provider offers clear setup instructions and support that is available while you are in Japan.
Choose Journey Japan eSIM for Your Trip to Japan
Ubigi is a solid eSIM for international travel, but if your trip is specifically to Japan, there are alternatives that are more focused on connectivity within the country.
Journey Japan eSIM is built for travelers visiting Japan, with access to major Japanese networks, fixed and unlimited data options, 5G/4G/LTE connectivity, and hotspot support. It is a good fit whether you are staying in Tokyo and Osaka or traveling between cities, visiting smaller towns, and exploring more rural parts of Japan.
You also get access to travel perks and discounts you can use during your trip, along with support focused specifically on travelers in Japan.
Explore our current lineup of fixed-data and unlimited plans and choose the option that works best for your trip.
