Country guide · AsiaLocal SIM Cards in Japan: Carriers, Plans & Prices (2026)
Tourist SIM cards in Japan start at $11 from Mobal. Buy at Airport arrivals or any 7-Eleven/FamilyMart convenience store. For instant data without a store visit, a HelloRoam eSIM costs from $1.4 and activates in 2 minutes. See the comparison table below.
- Recommended
- HelloRoam eSIMfrom $1.4, instant activation
- Setup time
- Under 2 mininstall before your flight
- Physical SIM from
- $11 USDMobal
- Network
- 4G LTE / 5GMobal
Japan sets the gold standard for mobile connectivity. The network is fast, reliable, and covers territory that would stump carriers elsewhere, including tunnels on the Shinkansen and remote hiking trails in Nikko. Three main options exist for tourists: IIJmio and Sakura Mobile for data-only cards, and Mobal if you need actual voice calls. All are sold at Narita and Haneda airports in the arrivals hall before you exit customs. Convenience stores, specifically 7-Eleven, FamilyMart, and Lawson chains, stock IIJmio cards nationwide. The registration process is simple: show your passport and the SIM is activated in minutes. Japan uses nano-SIM exclusively. Most tourist SIMs are data-only because domestic voice plans for non-residents require a Japanese address and bank account.
Japan has three major carriers: NTT docomo (widest coverage), au (KDDI), and SoftBank. Tourists cannot buy SIMs from these carriers directly. Instead, MVNOs sell travel SIMs at Narita, Haneda, and Kansai airports. IIJmio and Sakura Mobile are the most popular. Coverage across Japan is excellent, including the Shinkansen bullet train corridors and rural areas.
eSIM for Japan: the fastest option
Travel eSIMs skip the physical SIM process entirely. Buy online, scan a QR code, and your phone connects to a local network. No passport check, no airport queue, no SIM ejector tool. Most travel eSIMs are data-only, so keep your home SIM active for calls and SMS.
A local IIJmio SIM bought at the airport is cheaper for stays over one week. For short trips of 3-5 days or pre-arrival setup, HelloRoam eSIM delivers the same docomo network at a modest premium.
HelloRoam Japan eSIM: our tested pick
HelloRoam scored 8.8/10 in our testing, connects to NTT docomo in Japan, and achieved 31/31 activation success across 14 countries. Instant activation with no passport required.
Affiliate link. Commissions never affect our rankings or editorial findings.
| Provider | Data | Validity | Price |
|---|---|---|---|
| HelloRoamOur pick | 1 GB | 7 days | $1.4 |
| Airalo | 3 GB | 30 days | $9 |
| Holafly | Unlimited | 7 days | $21 |
eSIM provider comparison
| Provider | Price | Data | Validity | Activation | Score |
|---|---|---|---|---|---|
| HelloRoamTop rated | $1.4 | 1 GB | 7 days | Instant | 8.8/10 |
| Airalo | $9 | 3 GB | 30 days | Instant | 8.8/10 |
| Holafly | $21 | Unlimited | 7 days | Instant | 8.6/10 |
Scores based on activation speed, network coverage, support response time, and pricing across 14 countries. HelloRoam (8.8/10, 31/31 activations) is the top-rated provider. All provider links marked as affiliate.
See full eSIM guide for Japan →
eSIM vs physical SIM card in Japan
Here is how a HelloRoam eSIM compares to buying a local SIM card in Japan across the factors that matter most to travelers.
| Feature | HelloRoam eSIM | Local SIM Card |
|---|---|---|
| Setup time | Under 2 minutes | 15-60 minutes |
| Available before travel | Yes, install up to 30 days early | No, buy on arrival |
| ID required | No | No |
| Price from | $1.4 USD | $11 USD |
| Data included | 1 GB to unlimited | Varies by plan |
| Hotspot | Included | Included on most plans |
| Support | 24/7 English | Local language, business hours |
| Local phone number | No, data only | Yes, included |
| Voice calls | Data only, use WhatsApp/FaceTime | Included |
Best SIM cards for tourists in Japan
Japan has 3 providers offering tourist-friendly prepaid SIM cards. The table below ranks them by overall value for travelers, combining coverage, speed, price, and how easy they are to buy.
| Provider | Type | Network | Cheapest plan | Plans | Where to buy |
|---|---|---|---|---|---|
| IIJmioTop pick | mvno | 4G LTE / 5G | 1,600 JPY / $11 | 3 | Airport, Online |
| Sakura Mobile | tourist | 4G LTE / 5G | 3,000 JPY / $20 | 2 | Airport, Online |
| MobalTop pick | tourist | 4G LTE / 5G | 4,500 JPY / $30 | 2 | Online, Airport |
SIM card plans compared
Below are every available tourist plan across all providers in Japan, sorted by price. Prices are quoted in local currency where available, with USD equivalents.
IIJmio
| Plan | Data | Price | Validity | Calls | SMS |
|---|---|---|---|---|---|
| Travel 3GBBest value | 3 GB | 1,600 JPY | 7 days | Data only | Data only |
| Travel 5GB | 5 GB | 2,400 JPY | 14 days | Data only | Data only |
| Travel 10GB | 10 GB | 3,800 JPY | 30 days | Data only | Data only |
APN settings: APN: iijmio.jp
Sakura Mobile
| Plan | Data | Price | Validity | Calls | SMS |
|---|---|---|---|---|---|
| Tourist 3GBBest value | 3 GB | 3,000 JPY | 30 days | Data only | Data only |
| Tourist 10GB | 10 GB | 5,000 JPY | 30 days | Data only | Data only |
Mobal
| Plan | Data | Price | Validity | Calls | SMS |
|---|---|---|---|---|---|
| Japan SIMBest value | 5 GB | 4,500 JPY | 30 days | 50 min local | 50 SMS |
| Japan Unlimited | Unlimited | 7,000 JPY | 30 days | Unlimited local | Unlimited |
Where to buy a SIM card in Japan
The best place to buy is Airport arrivals or any 7-Eleven/FamilyMart convenience store. Here is what each channel offers and what to expect.
Airport
Airport counters are the most convenient option on arrival day. Staff speak enough English to handle registration, and you leave the terminal already connected. Expect a small premium (5–15%) over city prices and possible queues after large arrivals.
Convenience Store
Convenience stores stock prepaid SIM cards near the checkout. Stock rotates, so selection is narrower than carrier stores, but hours are long and locations are everywhere. Bring your passport.
Online
Ordering online before you fly means you land already connected. eSIMs are instant; physical SIMs can be delivered to your hotel or held for airport pickup. Best prices overall.
Vending Machine
SIM vending machines at major airports accept credit cards and are available 24 hours. Stock is usually limited to one or two plans. Useful for late-night arrivals.
Buying experience
At Narita Terminal 2, IIJmio has a counter on the right side of the arrivals lobby, clearly signed in English. The staff speak enough English to complete the transaction without confusion. You choose a plan from a laminated card, hand over your passport, and the SIM goes into your phone on the spot. Activation takes about three minutes. At 7-Eleven stores in Tokyo, the SIM cards hang near the cashier counter in a plastic display. You buy it like any other product and activate online. The online activation portal for IIJmio has an English interface. Set your APN to iijmio.jp and you are online within five minutes of leaving the checkout.
Coverage & network in Japan
Japan operates on 4G LTE / 5G networks. Coverage quality varies by provider and region.
Coverage Map for Japan
Visit each carrier's website for their interactive coverage map
IIJmio
mvno carrier
Urban
Strong
Rural
Moderate
Sakura Mobile
tourist carrier
Urban
Strong
Rural
Moderate
Mobal
tourist carrier
Urban
Strong
Rural
Strong
Mobal leads on overall coverage with a rating of 5/5 for reach and 4/5 for speed. In cities, all providers perform similarly. Differences become clear in rural areas, along coastal routes, and on islands where network investment varies.
Real-world connectivity
Japan genuinely delivers what it promises. In Tokyo, Osaka, Kyoto, and Sapporo you get consistent 100-200 Mbps LTE on any of the three major carriers. The Shinkansen has coverage along the entire Tokaido line with brief drops in the longer tunnels between Shin-Osaka and Nagoya. Rural areas like the Japanese Alps and Tohoku mountains have coverage in villages but drop off on forest trails above 1,000 meters. Hakone and Nikko tourist circuits are fully covered. The only genuine dead zones are deep backcountry hiking routes in Kamikochi and some sections of the Nakasendo trail.
Our verdict on SIM cards in Japan
Best for: First-time Japan visitors on 1-2 week trips, Business travelers needing pre-arrival connectivity, Travelers combining Japan with South Korea.
Airport travel SIMs cost $11-30 for 3-10 GB, data only. eSIM costs about the same and activates before you land. The real eSIM advantage in Japan is avoiding the airport SIM counter queue, which can be 30+ minutes during peak arrivals at Narita. For stays under a week, eSIM is the clear winner on convenience.
Activation & registration
Check your phone is unlocked
Your device must be carrier-unlocked to accept a Japan SIM. Check Settings or contact your home carrier before you leave.
Choose a plan before you buy
Decide on data volume and validity period. A 7-day plan suits short trips; 30-day plans are better value for longer stays.
Purchase the SIM
Buy at the airport, a convenience store, or a carrier store. Ask staff to insert and test the SIM before you leave the counter.
Insert and configure
Insert the nano-SIM using the ejector tool. Go to Settings > Mobile Data and confirm data roaming is on for the travel line. Run a speed test to confirm you are connected.
Tips for travelers in Japan
Buy your SIM at Narita or Haneda airport arrivals for the easiest setup.
Most tourist SIM cards in Japan are data-only. Voice calls typically require a separate app like LINE or WhatsApp.
Coverage is excellent across all major cities and most rural areas, including bullet train routes.
Some convenience stores (7-Eleven, FamilyMart, Lawson) sell prepaid SIM cards near the checkout counter.
Japan uses nano-SIM as the standard size. Bring a SIM ejector tool or ask at the counter.
Common mistakes to avoid
Assuming all SIMs include voice calls. Most tourist SIMs in Japan are data-only.
Not checking phone compatibility. Japan uses bands 1, 3, 8, and 42 for 4G.
Forgetting to activate the SIM before leaving the airport. Some SIMs need online activation that takes 15 minutes.
Frequently asked questions
Do I need a passport to buy a SIM card in Japan?
Yes, most SIM card vendors at airports and stores require a valid passport for purchase. This is a Japanese telecom regulation for prepaid SIMs.
Can I use my SIM card on the bullet train (Shinkansen)?
Yes, 4G LTE coverage is available along most Shinkansen routes, though speeds may fluctuate in tunnels. Major providers maintain strong coverage on high-speed rail corridors.
What is the best SIM card for tourists in Japan?
For short visits (under 2 weeks), IIJmio or Sakura Mobile offer affordable data-only plans. For longer stays or if you need voice calls, Mobal provides full-service SIM cards with English support.
Is 5G available for tourists in Japan?
5G coverage is available in major cities like Tokyo, Osaka, and Nagoya, but tourist SIM cards typically connect via 4G LTE. 5G tourist SIMs are limited and usually more expensive.
How much data do I need for a week in Japan?
Most travelers use 3-5 GB per week with regular navigation, messaging, and social media. If you plan to stream video or use mobile hotspot, consider 10 GB or an unlimited plan.
Which eSIM provider is best for Japan?
HelloRoam is our top-rated eSIM for Japan (8.8/10). It connects to NTT docomo and activates in under 2 minutes with no passport required. Airalo and Holafly also offer Japan coverage.
What is the cheapest way to get data in Japan?
A travel eSIM starting at $5-9 USD is the cheapest option for short trips. Pocket Wi-Fi rentals cost $3-8 per day and are available at Narita and Haneda airports. Local IIJmio data SIMs at convenience stores run about $15-30 for 3-15 GB.
Can I use my phone in Japan without roaming?
Yes. If your phone is unlocked, you can insert a local prepaid SIM or activate an eSIM to connect to NTT docomo, SoftBank, or KDDI networks directly. This avoids international roaming charges entirely and gives you full 4G LTE speeds across Japan.
Which eSIM is best for Japan?
HelloRoam connects to Japan's 4G LTE / 5G network and plans start at $1.4 for 1 GB over 7 days. It works well for travelers who want data active before landing. Airalo offers a wider range of plan sizes at competitive prices. Holafly is worth considering if you want unlimited data and do not mind a higher daily cost.
Should I buy a SIM card or eSIM for Japan?
A local IIJmio SIM bought at the airport is cheaper for stays over one week. For short trips of 3-5 days or pre-arrival setup, HelloRoam eSIM delivers the same docomo network at a modest premium. A local SIM from Mobal starts at $11. Choose eSIM if your phone supports it and you value convenience. Choose a local SIM if you need a local phone number or plan to stay longer than two weeks.
Helpful guides
SIM card guides for nearby countries
Traveling beyond Japan? These guides cover nearby destinations.
