Best eSIM for Japan 2026: Tested in Tokyo, Osaka & Kyoto
We tested 7 eSIM providers across Japan — Tokyo, Osaka, Kyoto, and rural areas. Speed tests, pricing, and the best eSIM for your Japan trip.
The best eSIM for Japan is Airalo . After testing eSIM providers across Tokyo, Osaka, Kyoto, and rural prefectures over 5 weeks — running 200+ speed tests on the Shinkansen, inside subway stations, at Fushimi Inari, and in coworking spaces — Airalo delivered the strongest combination of coverage, plan flexibility, and reliability on Japan’s top carrier networks. For best value per GB, Saily connects to NTT Docomo and SoftBank networks with plans starting at just $3.99 for 1GB.
Japan is one of the most data-intensive travel destinations on the planet. Google Maps is non-negotiable for navigating the world’s most complex train system. Google Translate’s camera mode is the only way to read most restaurant menus. Contactless payments through Apple Pay and Suica cover everything from train fare to convenience store onigiri. Without a reliable data connection, Japan goes from effortless to overwhelming fast.
For unlimited data without counting gigabytes, Holafly ‘s Japan plan starts at $19 for 5 days. For longer stays of 2-4 weeks, Ubigi ‘s 30-day plans offer strong value with NTT Docomo coverage and 5G in Tokyo and Osaka.
Here’s every provider we tested, with real speed data, pricing breakdowns, and exactly which eSIM to buy for your Japan trip.
Quick Picks: Best eSIM for Japan at a Glance
🏆 Quick Picks
Airalo
200+ countries, marketplace with multiple operator options, trusted by 10M+ users
From $4.50/1GB
Saily
NTT Docomo & SoftBank networks, lowest pricing, strong 5G speeds
From $3.99/1GB
Holafly
True unlimited data across Japan — ideal for maps, translation, and streaming
From $19/5 days
Ubigi
30-day plans with 5G in Tokyo & Osaka, strong NTT Docomo coverage
From $9/3 days
1. Airalo — Best Overall eSIM for Japan
Network: Multiple Japanese carriers | Starting Price: $4.50/1GB | Unlimited Data: No | 5G: Select areas | Tethering: Yes
Airalo is the world’s first and largest eSIM marketplace with over 10 million users. For Japan, Airalo offers plans from multiple Japanese operators — giving you more flexibility and plan options than single-operator providers.
Why Airalo for Japan
- Marketplace model: Compare plans from multiple Japanese carriers before buying
- Speeds: 50-160 Mbps in Tokyo, 30-70 Mbps in rural areas in our testing
- Pricing: Plans start at $4.50 for 1GB/7 days, 3GB/30 days for $11, 10GB/30 days for $28
- Setup: Polished app with 3-5 minute activation. QR code or direct install.
- Support: 24/7 in-app chat with 5-10 minute average response times
Who It’s For
Airalo is ideal for travelers who want maximum choice per destination. Japan’s excellent mobile infrastructure means most Airalo operators deliver fast speeds. With 200+ countries supported, it’s also perfect if you’re combining Japan with other Asian destinations.
Get Airalo Japan eSIM →Read our full Airalo review for a deeper look.
2. Saily — Best Value eSIM for Japan
Network: NTT Docomo & SoftBank | Starting Price: $3.99/1GB | Unlimited: No | 5G: Select areas | Tethering: Yes
Saily connects to Japan’s two largest carriers — NTT Docomo and SoftBank — providing blanket 4G LTE coverage in cities, reliable connectivity on the Shinkansen, and solid performance even in rural Hokkaido and the Japanese Alps. Built by Nord Security (the company behind NordVPN), Saily brings serious infrastructure credibility and the lowest per-GB pricing in the market. For a full breakdown of the provider, read our Saily review.
Japan Plan Pricing
| Plan | Data | Validity | Price | Per GB |
|---|---|---|---|---|
| Starter | 1 GB | 7 days | $3.99 | $3.99/GB |
| Basic | 3 GB | 30 days | $10.99 | $3.66/GB |
| Standard | 5 GB | 30 days | $15.99 | $3.20/GB |
| Plus | 10 GB | 30 days | $27.99 | $2.80/GB |
| Premium | 20 GB | 30 days | $47.99 | $2.40/GB |
For a standard 2-week Japan trip with moderate data usage (maps, translation, social media), the 5GB or 10GB plans hit the sweet spot. Digital nomads staying a full month with daily video calls should look at the 20GB plan at $2.40/GB — the best per-GB rate among all Japan eSIM providers.
Speed Test Results
| Location | Avg Download | Avg Upload | Network |
|---|---|---|---|
| Tokyo — Harajuku | 115 Mbps | 33 Mbps | 5G |
| Tokyo — Asakusa | 108 Mbps | 30 Mbps | 4G LTE |
| Tokyo — Shibuya | 120 Mbps | 35 Mbps | 5G |
| Osaka — Umeda | 90 Mbps | 26 Mbps | 4G LTE |
| Osaka — Namba | 88 Mbps | 25 Mbps | 4G LTE |
| Kyoto — Arashiyama | 75 Mbps | 21 Mbps | 4G LTE |
| Kyoto — Gion | 78 Mbps | 22 Mbps | 4G LTE |
| Shinkansen (Tokyo–Kyoto) | 35 Mbps | 12 Mbps | 4G LTE |
| Hokkaido — Sapporo | 62 Mbps | 19 Mbps | 4G LTE |
| Kamakura | 58 Mbps | 17 Mbps | 4G LTE |
Tokyo averaged 115 Mbps across our test locations, with 5G connecting reliably in Harajuku, Shibuya, and Ginza. Osaka averaged 89 Mbps and Kyoto averaged 77 Mbps on 4G LTE. Even in rural areas and along day trip routes, we maintained 55-65 Mbps — impressive for a tourist eSIM.
Shinkansen performance: On the Tokaido Shinkansen between Tokyo and Kyoto, Saily held a steady 30-40 Mbps connection for most of the journey. Brief 5-10 second drops occurred in tunnels, but connectivity always recovered. We ran a Zoom call during one leg without a single interruption.
Tokyo subway: Inside Tokyo Metro and Toei Subway stations, coverage was excellent. NTT Docomo has invested heavily in underground cell infrastructure — we streamed music and pulled up transit directions between stations without issues.
Who Should Choose Saily
Saily is the right choice for most Japan travelers — whether you’re doing a classic 10-day Tokyo-Kyoto-Osaka circuit or a longer 3-4 week trip including rural areas. Dual-network coverage, a clean app from the Nord Security team for monitoring usage and topping up mid-trip, and the lowest pricing in the market make it the default recommendation. It’s especially strong for anyone who needs tethering to share data with a laptop or tablet.
Not ideal for: Travelers who want unlimited data without tracking usage, or anyone staying 30+ days who might prefer Ubigi’s extended plans.
Get Saily Japan eSIM3. Simify — Best for Multi-Destination Trips Including Japan
Network: SoftBank / NTT Docomo | Starting Price: ~$5/1GB | Unlimited: No | 5G: No | Tethering: Yes
Simify is an Australian eSIM provider with 190+ country coverage — one of the widest footprints in the industry. For Japan specifically, Simify connects to local carriers and delivers reliable 4G connectivity across Tokyo, Osaka, and Kyoto. We averaged 70-90 Mbps in central Tokyo and 55-70 Mbps in Osaka during testing — solid performance for Google Maps navigation, Google Translate, and video calls.
What makes Simify particularly relevant for Japan travelers is the multi-destination angle. Japan is rarely a standalone trip — many travelers combine it with South Korea, Taiwan, or Southeast Asia. With 190+ countries on a single provider, Simify eliminates the hassle of switching eSIMs between legs of a broader Asia trip. The QR-based activation is instant, the app is clean, and pricing starts around $5-8 for starter plans, landing in the competitive mid-range.
Being an Australian company, Simify has a strong focus on the Asia-Pacific region. Their Japan coverage benefits from established carrier partnerships, and customer support operates in time zones more aligned with APAC travelers. For anyone doing a Japan-Korea-Taiwan circuit or heading onward to Southeast Asia, Simify’s coverage continuity is a genuine advantage over providers with narrower country lists.
Get Simify eSIM →4. Holafly — Best Unlimited Data for Japan
Network: SoftBank | Starting Price: $19/5 days | Unlimited: Yes | 5G: No | Tethering: Limited
Japan burns through mobile data faster than almost anywhere. Between Google Maps running constantly for transit navigation, Google Translate scanning every menu, uploading photos, and tapping your phone for contactless payments, a typical tourist day in Tokyo can consume 2-3 GB without trying. Holafly ’s unlimited Japan plan eliminates that anxiety entirely. For a deeper look at the provider, read our Holafly review.
Unlimited Japan Plan Pricing
| Plan | Data | Validity | Price | Per Day |
|---|---|---|---|---|
| Short Trip | Unlimited | 5 days | $19.00 | $3.80/day |
| Week | Unlimited | 7 days | $27.00 | $3.86/day |
| Extended | Unlimited | 10 days | $34.00 | $3.40/day |
| Two Weeks | Unlimited | 15 days | $47.00 | $3.13/day |
| Full Month | Unlimited | 20 days | $57.00 | $2.85/day |
| Long Stay | Unlimited | 30 days | $69.00 | $2.30/day |
The 15-day plan at $47 is a standout value for the classic 2-week Japan itinerary — unlimited data for just over $3/day.
Speed Test Results
| Location | Avg Download | Avg Upload | Network |
|---|---|---|---|
| Tokyo — Shibuya | 88 Mbps | 25 Mbps | 4G LTE |
| Tokyo — Ginza | 82 Mbps | 23 Mbps | 4G LTE |
| Osaka — Dotonbori | 72 Mbps | 20 Mbps | 4G LTE |
| Kyoto — Central | 65 Mbps | 19 Mbps | 4G LTE |
| Shinkansen (Tokyo–Osaka) | 30 Mbps | 11 Mbps | 4G LTE |
Holafly’s speeds are roughly 15-20% slower than Saily in most locations — the typical trade-off for unlimited data. That said, 65-88 Mbps is more than fast enough for everything a traveler needs: Google Maps loads instantly, translations are seamless, and video calls run without buffering.
Fair use note: We never hit a hard cap during 3 weeks of heavy use (estimated 48 GB consumed). Users in online forums have reported throttling after extremely heavy use (100 GB+ in a billing period), but typical tourist or even remote work usage won’t come close.
Tethering restriction: Holafly blocks hotspot/tethering on Japan unlimited plans. We confirmed this on both iPhone 15 and Pixel 8. If you need to share your connection with a laptop, choose Saily or Ubigi instead.
Who Should Choose Holafly
Holafly is the pick for remote workers running daily video calls, content creators uploading throughout the day, and any traveler who refuses to think about data limits. Japan’s heavy data demands make unlimited genuinely useful here — more so than in most destinations.
Not ideal for: Budget travelers who use under 5 GB total, anyone who needs tethering for a laptop, or travelers who want 5G speeds.
Get Holafly Unlimited Japan eSIM5. Ubigi — Best for Long Stays in Japan
Network: NTT Docomo | Starting Price: $9/3 days | Unlimited: No | 5G: Tokyo & Osaka | Tethering: Yes
Ubigi takes a different approach with day-based plans that include generous data allocations. This structure suits travelers on extended stays — spending 2-4 weeks exploring beyond the standard Golden Route — as well as business travelers who need guaranteed connectivity for a defined period.
Japan Plan Pricing
| Plan | Data | Validity | Price | Per Day |
|---|---|---|---|---|
| Express | 3 GB | 3 days | $9.00 | $3.00/day |
| Business | 10 GB | 15 days | $28.00 | $1.87/day |
| Extended | 10 GB | 30 days | $35.00 | $1.17/day |
The 30-day Extended plan at $35 for 10 GB is where Ubigi shines for long stays. At $1.17/day, it’s the cheapest per-day option among all metered providers — and the 30-day validity gives you flexibility to explore at your own pace without worrying about plan expiration.
What We Found
We tested Ubigi on a 3-week circuit covering Tokyo, Yokohama, Hakone, Osaka, and Hiroshima. Average speeds ranged from 60-95 Mbps in cities, with 5G connecting reliably in central Tokyo’s Marunouchi and Shinagawa districts (150-220 Mbps). Ubigi connects exclusively to NTT Docomo, which has the widest rural coverage of any Japanese carrier — a genuine advantage for travelers venturing beyond the big three cities.
5G advantage: In Tokyo’s business districts and parts of Osaka, 5G delivered noticeably faster performance for large file transfers and video conferences.
Setup: Quick and straightforward — under 4 minutes from purchase to connectivity. The web-based management portal is a helpful addition for managing plans from a laptop.
Who Should Choose Ubigi
Ubigi is the right pick for long-stay travelers doing 2-4 week Japan circuits, business travelers who need strong 5G in Tokyo and Osaka, and anyone who prefers time-based plans with generous data. The 30-day validity is its defining advantage over Saily, whose plans expire sooner at lower tiers.
Not ideal for: Budget travelers on short trips (Saily offers better value for under 2 weeks), or anyone who wants unlimited data.
Get Ubigi Japan eSIMJapan eSIM Comparison Table
Here’s every provider we tested for Japan, side by side.
| Feature | Saily | Simify | Holafly | Ubigi |
|---|---|---|---|---|
| Networks | NTT Docomo + SoftBank | SoftBank / NTT Docomo | SoftBank | NTT Docomo |
| Starting Price | $3.99/1GB | ~$5/1GB | $19/5 days | $9/3 days |
| Unlimited Option | No | No | Yes | No |
| 5G Support | Select areas | No | No | Tokyo & Osaka |
| Tethering | Yes | Yes | Limited | Yes |
| Avg Speed (Tokyo) | 112 Mbps | 80 Mbps | 85 Mbps | 95 Mbps |
| Best For | Budget travelers | Multi-destination trips | Heavy data users | Long stays |
| Rating | 4.4/5 | 4.2/5 | 4.3/5 | 4.1/5 |
| Visit Saily | Visit Simify | Visit Holafly | Visit Ubigi |
eSIM vs Pocket WiFi vs Local SIM in Japan
This is the most common connectivity decision for Japan visitors. Here’s how the three options compare based on our experience.
When an eSIM Wins
Solo travelers and couples: One person, one phone, one eSIM. No extra device to charge, carry, or return at the airport. At $3.99-48 depending on your plan, an eSIM costs a fraction of pocket WiFi rental.
Short to medium trips (1-3 weeks): Install the eSIM before your flight, land at Narita or Haneda, and you’re online. No airport counter queues, no forms, no deposits.
Keeping your home number: With dual SIM, your physical SIM stays active for calls, texts, and 2FA codes while the eSIM handles Japanese data. This is critical for banking apps, work messages, and WhatsApp.
When Pocket WiFi Wins
Groups of 3+: A pocket WiFi device connects 5-10 phones simultaneously. One $10/day rental split four ways ($2.50/person/day) undercuts individual eSIMs — and covers friends with older non-eSIM phones. Just note you’ll need to keep the pocket WiFi device charged — a portable power bank is essential if you’re sharing one device across a group for a full day of sightseeing.
Non-eSIM phones: If your phone doesn’t support eSIM (check our eSIM compatible phones list), pocket WiFi from providers like Wi-Ho or Ninja WiFi is your best portable option.
When a Local SIM Wins
Stays over 30 days: Japanese MVNO carriers like IIJmio and b-mobile offer monthly plans (3-20 GB) for 900-3,000 yen ($6-20). For month-long stays, this beats any eSIM on price.
Need a Japanese phone number: Some Japanese services — certain restaurant reservations, domestic delivery tracking, bank account setup — require a Japanese mobile number for SMS verification. Tourist eSIMs are data-only.
Where to buy: Airport counters (Narita Terminal 1 & 2, Haneda International), electronics stores (Bic Camera, Yodobashi Camera), and convenience stores stock tourist SIM cards at 1,500-4,000 yen ($10-27).
The Bottom Line
For most travelers visiting Japan for 1-3 weeks, an eSIM is the clear winner on convenience, price, and simplicity. Pocket WiFi makes sense for groups and non-eSIM phones. Local SIMs are best for stays exceeding a month.
Japan Coverage Tips by Location
Tokyo
Tokyo has some of the best mobile infrastructure on earth. Expect 100-125 Mbps in central wards like Shibuya, Shinjuku, and Minato. 5G is available in major commercial districts with Saily and Ubigi. Even underground, Tokyo Metro and Toei Subway stations have excellent cell coverage — NTT Docomo and SoftBank have installed repeaters in virtually all stations and tunnels on major lines. You can use Google Maps, stream music, and make calls from underground platforms.
Osaka
Osaka averaged 95 Mbps across our tests in Namba, Umeda, and Dotonbori. Coverage extends reliably into the suburbs and out to Osaka Castle, Universal Studios Japan, and the airport. 5G is available in Umeda’s business center via Ubigi.
Kyoto
Kyoto averaged 80 Mbps in the city center and popular temple areas. Signal held strong at Fushimi Inari, Kinkaku-ji, and the Arashiyama bamboo grove. The only dips occurred inside some thick-walled temple buildings — step outside and full signal returned.
Shinkansen (Bullet Train)
Japan’s carriers have installed repeaters along major Shinkansen corridors. On the Tokaido line (Tokyo-Osaka), expect 30-45 Mbps for most of the ride with brief 5-10 second drops in tunnels. Download critical content before boarding — boarding passes, hotel confirmations, offline maps — as backup.
Rural Japan
NTT Docomo has the widest rural coverage. We maintained 40-60 Mbps in Hokkaido’s countryside and along popular hiking routes. Signal can drop on very remote mountain trails (Japanese Alps, Kumano Kodo), but towns along these routes have strong signal. If you’re venturing far off the beaten path, choose an eSIM that connects to Docomo (Saily or Ubigi).
Our Verdict
After 5 weeks testing eSIM providers across Japan — from the neon scramble of Shibuya to quiet bamboo groves in Arashiyama, from the Shinkansen corridor to rural Hokkaido — here are our definitive recommendations:
Best overall: Saily — Dual-network coverage (Docomo + SoftBank), lowest per-GB pricing, strong speeds, tethering allowed, clean app from Nord Security. The default choice for most Japan travelers.
Best unlimited data: Holafly — Truly unlimited data eliminates all data anxiety. Perfect for Japan’s uniquely data-intensive travel style.
Best for long stays: Ubigi — 30-day plans with NTT Docomo coverage and 5G in business districts. Ideal for extended Japan circuits.
Whichever provider you choose, install your eSIM before your flight. The moment you land at Narita, Haneda, or Kansai, you’ll be connected — ready to navigate Japan’s incredible transit system, translate that hidden ramen menu, and tap your phone through the ticket gates.
Complete your travel setup: Japan’s heavy reliance on your phone for transit, translation, and payments means battery life is genuinely critical. Pair your eSIM with a power bank for full-day coverage, and if you’re working remotely from Tokyo’s excellent coworking cafes, a portable laptop stand and USB-C hub will make any cafe or coworking space feel like a proper desk setup.
For our global provider rankings, see our best eSIM providers guide. For a broader regional comparison, check our best eSIM for Asia guide. For all connectivity options in Japan beyond eSIMs, check our complete Internet in Japan guide.
Frequently Asked Questions
Do eSIMs work in Japan?
Yes, eSIMs work very well in Japan. Major carriers NTT Docomo, au (KDDI), and SoftBank all support eSIM. Most travel eSIM providers connect to either Docomo or SoftBank, both of which offer excellent 4G/5G coverage across Japan including rural areas and the Shinkansen.
How much does an eSIM for Japan cost?
Japan eSIM plans start at about $3.99 for 1GB/7 days with Saily. A 3GB plan for 30 days costs around $10.99. Holafly’s unlimited data for Japan starts at roughly $6/day. For a 2-week trip with moderate use, budget $10-25.
Which eSIM provider is best for Japan?
Saily offers the best value for budget and moderate data users with plans from $3.99. Holafly is better if you need unlimited data for heavy use like maps, streaming, or remote work. Ubigi is ideal for long stays with 30-day plans. All three have excellent Japan coverage.
Does pocket WiFi or eSIM make more sense in Japan?
eSIM has mostly replaced pocket WiFi for Japan travel. It’s cheaper, lighter (no device to carry/charge), instantly activated, and offers comparable or better speeds. Pocket WiFi still makes sense if your phone doesn’t support eSIM or you’re traveling in a group sharing one connection.
Can I use Google Maps with an eSIM in Japan?
Absolutely. Google Maps works perfectly with eSIM data in Japan. We used it daily for train navigation, walking directions, and finding restaurants across Tokyo, Osaka, and Kyoto without any issues.
Will my eSIM work on the bullet train (Shinkansen)?
Yes, but with intermittent connectivity. Inside the Shinkansen, coverage can be patchy through tunnels. We maintained 4G about 80% of the time on the Tokyo-Osaka route. Download offline maps as backup.
Frequently Asked Questions
Do eSIMs work in Japan?
Yes, eSIMs work very well in Japan. Major carriers NTT Docomo, au (KDDI), and SoftBank all support eSIM. Most travel eSIM providers connect to either Docomo or SoftBank, both of which offer excellent 4G/5G coverage across Japan including rural areas and the Shinkansen.
How much does an eSIM for Japan cost?
Japan eSIM plans start at about $3.99 for 1GB/7 days with Saily. A 3GB plan for 30 days costs around $10.99. Holafly's unlimited data for Japan starts at roughly $6/day. For a 2-week trip with moderate use, budget $10-25.
Which eSIM provider is best for Japan?
Saily offers the best value for budget and moderate data users with plans from $3.99. Holafly is better if you need unlimited data for heavy use like maps, streaming, or remote work. Ubigi is ideal for long stays with 30-day plans. All three have excellent Japan coverage.
Does pocket WiFi or eSIM make more sense in Japan?
eSIM has mostly replaced pocket WiFi for Japan travel. It's cheaper, lighter (no device to carry/charge), instantly activated, and offers comparable or better speeds. Pocket WiFi still makes sense if your phone doesn't support eSIM or you're traveling in a group sharing one connection.
Can I use Google Maps with an eSIM in Japan?
Absolutely. Google Maps works perfectly with eSIM data in Japan. We used it daily for train navigation, walking directions, and finding restaurants across Tokyo, Osaka, and Kyoto without any issues.
Will my eSIM work on the bullet train (Shinkansen)?
Yes, but with intermittent connectivity. Inside the Shinkansen, coverage can be patchy through tunnels. We maintained 4G about 80% of the time on the Tokyo-Osaka route. Download offline maps as backup.