Japan SIM Card Guide 2026: Where to Buy, Prices, and Best Plans

Physical SIM cards remain a genuinely useful option in Japan for anyone whose phone cannot hold an eSIM, and the market is small but well priced. Budget buyers gravitate to b-mobile at about $13 for 5GB over 10 days, while moderate users get the best value from IIJmio’s BIC SIM at roughly $16.50 for 3GB over 30 days; Mobal is the pick if you need a Japanese phone number and Sakura Mobile for unlimited data. One regulatory change matters before you buy: an amendment passed by the Diet extends identity verification to data-only SIMs and adds passport checks for short-stay visitors, so keep your physical passport with you at the counter.

Introduction: Japan SIM Card vs eSIM — Why Physical SIMs Still Matter in 2026

Key takeaways: Physical SIM cards remain a reliable option in Japan, with b-mobile the budget pick at $13 for 5GB over 10 days and IIJmio’s BIC SIM the best value for moderate users at $16.50 for 3GB over 30 days. Choose Mobal if you need a Japanese phone number or Sakura Mobile for unlimited data. Japan’s SIM rules tightened in 2026: an amendment passed by the Diet extends identity verification to data-only SIMs and adds passport checks for short-stay visitors, with the commencement date set by cabinet order. Voice SIMs have required photo ID for years, so keep your physical passport with you when you buy.

In 2026, eSIM has become the default choice for most travelers with modern smartphones. It’s faster, more convenient, and often cheaper. But what if your phone doesn’t support eSIM? What if you’re traveling with an older device, or you simply prefer the familiarity of a physical card?

Physical SIM cards are still widely available across Japan — and for many travelers, they remain the most practical option.

This guide covers everything you need to know about buying a Japan SIM card in 2026: where to find them, how much they cost, which providers offer the best value, and how to set one up when you arrive.

If your phone does support eSIM, you might want to check our Japan eSIM primer instead. But if you need a physical SIM — or just want to know your options — read on.

Quick Answer: Should You Get a Physical SIM or eSIM?

For most travelers in 2026, eSIM is the easiest and most affordable option. But physical SIM cards remain a reliable fallback — and in some cases, they’re still the best choice.

Part 1: Types of Japan SIM Cards (and How They Differ From an eSIM)

Data-Only SIM Cards (Most Common)

Data-only SIM cards provide mobile internet access without a phone number. They’re the most popular choice for tourists who plan to use messaging apps (WhatsApp, LINE, WeChat) and VoIP calls (Skype, Google Voice) rather than traditional calls.

Best for: Most tourists, short-term visitors, and anyone who doesn’t need a Japanese phone number.

Price range: $10–$27 USD for 7–30 days

Voice + Data SIM Cards

These SIM cards include a Japanese phone number, allowing you to make and receive traditional calls and SMS. It matters when a booking site, rental agency or domestic service asks for SMS verification.

Best for: Long-term travelers, expats, business travelers, and anyone who needs a Japanese phone number.

Price range: $20–$70+ USD, depending on data allowance

Unlimited Data SIM Cards

Some providers offer “unlimited” data plans. However, as with eSIMs, “unlimited” often means a daily soft cap (typically 2–5 GB per day) after which speeds are throttled. Make sure to read the fine print before purchasing.

Best for: Heavy data users, streamers, and remote workers.

Price range: $30–$100+ USD

Part 2: Where to Buy a Japan SIM Card

1. At the Airport (Most Convenient)

Major international airports in Japan have multiple SIM card counters in the arrival halls.

Narita Airport (NRT):

• SoftBank counters in Terminals 1 and 2
• BIC Camera in Terminal 2 arrivals
• JAL ABC counter (data SIMs from about $20 for 3 GB)

Haneda Airport (HND):

• BIC Camera in Terminal 3 (7:00–22:00)
• 24-hour JAL ABC counter in arrivals
• SoftBank counter in Terminal 2

Kansai Airport (KIX):

• Counters in Terminal 1, including Sakura Mobile with English-speaking staff

Other airports: Chubu, Fukuoka, and Naha airports also have SIM card counters

Pros: Instant activation, arrive already connected Cons: Higher prices than electronics stores, queues after big arrivals

2. Electronics Stores (Best Selection and Prices)

BIC Camera and Yodobashi Camera are the two largest electronics chains in Japan, and they stock a wide variety of prepaid SIM cards.

BIC Camera:

• Located at major airports and in city centers
• Stocks multiple SIM brands including IIJmio (BIC SIM) and b-mobile
• Tourist data SIMs available

Yodobashi Camera:

• Locations across Japan, including Umeda (Osaka)
• Stock multiple SIM brands, often with more choice than airports
• Prices are generally lower than airport counters

Pros: Wider selection, lower prices than airports, English-speaking staff available Cons: Requires finding a store after arrival, may need to take a train from the airport

3. Convenience Stores (Limited but Convenient)

Some convenience stores — 7-Eleven, FamilyMart, and Lawson — sell prepaid data SIM cards. However, selection is limited and availability varies by location.

Pros: Open 24/7, everywhere Cons: Limited selection, may not have English instructions

4. Online Before You Travel (Best for Planning)

Several providers allow you to order a SIM card online before you leave home and pick it up at the airport or have it delivered to your hotel.

Providers offering this service:

• Mobal — SIM cards with Japanese phone numbers
• Ninja WiFi — SIM and eSIM options
• Sakura Mobile — physical SIMs with English support
• NTT Communications — Prepaid SIM for Japan, available at designated airports

Pros: Plan ahead, guaranteed availability, often cheaper Cons: Must plan in advance, cannot change your mind on arrival

5. Vending Machines (Emerging Option)

Some airports and hotels now have vending machines selling prepaid SIM cards. This is a quick option if you arrive outside normal store hours.

Part 3: Buying a Japan SIM at Each Airport: What Is Actually Open When You Land

The three channels you will find in arrivals

Every major Japanese international airport offers some combination of the same three things: a carrier counter, an electronics retailer with a SIM section, and a travel-SIM desk run by a specialist company. Narita spreads counters across Terminals 1 and 2, Haneda concentrates its largest retail presence in Terminal 3 alongside additional counters, Kansai clusters its options in Terminal 1 including English-speaking staff, and Chubu, Fukuoka and Naha each have at least one data-SIM channel in arrivals.

What airport counters are good at, and bad at

The advantage is immediacy: you walk off the plane and leave connected, with staff who will often fit the card for you. The disadvantages are just as consistent across airports. Prices run higher than city electronics stores for the same allowance, queues build behind large arrivals, and the range of plans is narrower than what the same provider sells online.

When the airport is genuinely the right answer

If your flight lands at an awkward hour, or your phone simply cannot take an eSIM, a counter or vending machine may be the only option open — and at that point the premium is worth paying rather than fighting with a phone at 11pm. For everyone else, an eSIM bought before departure arrives as an email and costs less per gigabyte than the same data bought on arrival; the cost-per-gigabyte comparison puts the two side by side.

Pros: 24/7 availability, quick Cons: Limited selection, potentially higher prices

Part 4: Japan SIM Card Providers Compared (2026)

Here are the most popular physical SIM card providers for tourists in Japan, based on publicly available pricing. To weigh them against digital options, the how providers stack up normalises cost per GB.

Prices checked September 2026. Data compiled from provider websites and publicly available travel resources. USD conversions approximate. Check provider websites for current rates.

Provider Deep Dives

b-mobile — Best Budget Option

b-mobile offers some of the cheapest prepaid SIM cards in Japan, with plans starting at $13 for 5GB over 10 days. Their SIMs run on NTT Docomo’s network, which provides the most extensive coverage in Japan.

Best for: Budget travelers who need basic data for navigation and messaging.

Network: NTT Docomo Voice: Data only

IIJmio / BIC SIM — Best Value for Moderate Users

IIJmio’s BIC SIM is sold at BIC Camera stores and offers solid value for moderate data users. The 3GB/30-day plan at $16.50 is a popular choice for tourists staying around two weeks.

Best for: Travelers who need moderate data for a 1-2 week trip.

Network: NTT Docomo Voice: Data only

Mobal — Best for a Japanese Phone Number

Mobal is one of the few providers offering physical SIM cards with a real Japanese phone number. This is essential if you need to make restaurant reservations, receive SMS verification, or use local services that require a Japanese number.

Best for: Business travelers, long-term visitors, and anyone who needs a Japanese phone number.

Network: SoftBank Voice: Yes (Japanese phone number included)

Sakura Mobile — Best for Unlimited Data and English Support

Sakura Mobile is a Japan-based provider with excellent English-language support. Their unlimited data plans are popular with heavy users and first-time visitors who want peace of mind.

Best for: Heavy data users, remote workers, and first-time visitors who want English support.

Network: NTT Docomo / au Voice: Data only (unlimited plan has no daily cap on 5G au)

NTT Communications Prepaid SIM — Best for Light Users

NTT Communications offers a simple 100MB/day prepaid SIM plan. If you’re a light user who mostly relies on hotel WiFi, this can be a cost-effective option.

Part 5: Which Physical SIM Should You Actually Buy?

Match the card to the job, not the brand

The honest caveat about physical SIM pricing

Physical tourist SIMs generally cost more per gigabyte than an eSIM with the same allowance, and the gap is widest at the entry level. You are paying for the plastic, the counter staff and the ability to buy connectivity inside a terminal at almost any hour. That is a fair thing to pay for when it is the only route your phone supports, and a waste when it is not.

The one case where a physical card is the point

If the reason you are buying a card is a Japanese phone number, the calculation changes completely. A voice-capable SIM or eSIM with an 070, 080 or 090 number is the only product that provides one, and no data plan substitutes for it. The guide to Japanese numbers for visitors covers who can get one, and our carrier-by-carrier coverage notes explain why the network behind the plan decides how well it works once you leave the cities. Both of the main visitor-facing providers, Mobal and Sakura Mobile, publish their current plan terms and identification requirements on their own sites.

Part 6: What Japan’s 2026 SIM Identity Rules Change at the Counter

The law, in plain terms

Japan’s Diet passed an amendment in 2026 that extends identity verification to data-only SIMs, where the requirement had previously focused on voice lines. It also provides for passport-based verification of foreign nationals who hold no Japanese address — the short-stay visitor case — and allows carriers to refuse service once one person holds an unusually large number of lines. The measure follows a record year of fraud losses and evidence that data-only connections were being used to reach victims.

One detail decides how much you will notice: the commencement date is set by cabinet order rather than coinciding with passage. Until that order takes effect, practice at the counter and the text of the law can differ, so treat any confident claim about “the new rule” with caution and check the current position before you travel rather than a summary written months earlier.

Three purchase routes, three different answers

What this looks like at the counter

Carry your passport, keep it with you rather than in a suitcase, and allow more time than you would have a few years ago. Photographs and photocopies are not accepted for verification — staff need the physical document. If you would rather not spend your first hour in Japan on paperwork, buying a data-only eSIM before departure is the version of this decision that skips the queue and the check entirely.

Best for: Light users who need basic connectivity for occasional map checks and messaging.

Network: NTT Docomo Voice: Data only

Part 7: How to Buy and Activate a Japan SIM Card

Step 1: Check Phone Compatibility

Before buying any SIM card, confirm two things:

1. Your phone is carrier-unlocked — check with your home carrier
2. Your phone supports the correct SIM size — most modern phones use nano-SIM

Step 2: Bring Your Passport

Japan’s SIM rules changed in 2026. A voice SIM with a Japanese number has always required photo ID, and still does. What changed is that an amendment passed by the Diet extends identity verification to data-only SIMs and explicitly provides for passport-based verification of foreign nationals who have no Japanese address, which is the short-stay visitor case. The commencement date is set by cabinet order rather than falling on the day of passage, so counter practice can run ahead of or behind the written rule. Japan’s Ministry of Internal Affairs and Communications oversees the framework.

In practice, bring your passport when buying any SIM in Japan — at airport counters, electronics stores and convenience stores alike. A data-only eSIM bought from an overseas seller before you fly is the one route that involves no ID check at all, because it is not a Japanese SIM contract. Which of the three routes you are on is set out in Part 6.

Pro tip: Keep your passport on you when shopping for a SIM. Digital copies or photos are not accepted — you need the physical document.

Step 3: Choose Your Plan

Decide on your data needs based on your trip length:

• 3-5 days: 1-3 GB
• 7-10 days: 3-7 GB
• 14+ days: 7-15 GB or unlimited

Step 4: Purchase and Activate

At airport counters or electronics stores:

1. Find the SIM card section or counter
2. Show your passport
3. Choose your plan
4. Pay (credit cards and cash accepted)
5. The staff will help you insert and activate the SIM card

At convenience stores:

1. Find the SIM card display (usually near the register)
2. Take the package to the counter
3. Show your passport
4. Pay and follow the instructions inside the package

Step 5: Configure APN Settings

Most SIM cards require manual APN (Access Point Name) configuration. The APN settings are usually printed on the card or included in the package instructions.

Common Japan SIM APN values:

On iPhone:

1. Settings → Cellular → Cellular Data Network
2. Enter the APN, username, and password from the instructions
3. Save and restart

On Android:

1. Settings → Connections → Mobile Networks → Access Point Names
2. Add a new APN with the settings from the instructions
3. Save and select the new APN

Step 6: Test Your Connection

Once activated, open a browser or app to confirm data is working. If not, double-check the APN settings or restart your phone.

Part 8: What Happens When Your SIM Data Runs Out in Japan

Ask whether your SIM can be topped up at all

This is the most useful question to ask before paying, and the answer differs by product. Some Japanese prepaid SIMs are single-purchase: when the allowance is gone, the plan is gone, and the fix is to buy another card. Others let you add data later through the provider’s app or website. The difference only shows up at the worst moment — the second-to-last day, with one day of navigation left — so settle it while you are still standing at the counter.

The realistic mid-trip options

If your card cannot be topped up, there are three routes: buy a second small SIM from an electronics store or convenience store, rent a pocket WiFi for the remaining days, or lean on Japan’s public WiFi, which is genuinely good in hotels, cafés, convenience stores and most train stations. The second SIM is usually the cheapest and takes one visit to a BIC Camera or Yodobashi store.

Sizing the card so this never happens

The arithmetic is straightforward. Light use — maps, messaging and translation — runs about 0.5 GB a day. Moderate use with social media runs 1–2 GB. Streaming and laptop tethering push past 3 GB. A card sized for the whole trip rather than for a week removes the problem at the planning stage, and our data volume breakdown by trip length shows what each shape of trip actually consumes.

Part 9: When to Choose a Physical SIM Over eSIM or Pocket WiFi

Choosing between a physical SIM, eSIM, and pocket WiFi depends on your specific travel situation. Here’s a detailed decision guide:

Choose a Physical SIM if:

• Your phone does NOT support eSIM — the most common reason. Check with *#06# on your phone’s dialer. If you see an EID number, your phone supports eSIM. If you only see IMEI numbers, it does not — or check our phone compatibility check.
• You’re buying a voice-enabled plan — eSIMs rarely include a Japanese phone number. If you need one for reservations or verification, a physical SIM from Mobal is often the simplest way.
• You prefer the familiarity of a physical card — some travelers simply prefer having a tangible product they can swap between devices.
• You plan to use the SIM in multiple devices — you can easily move a physical SIM between phones.
• You want to keep your home SIM in the phone — physical SIM + eSIM are both options, but if you want to keep the physical slot open for other travel SIMs, consider eSIM instead.

Choose eSIM if:

• Your phone supports eSIM and you want the convenience of installing before travel.
• You want to keep your home SIM active for calls and SMS while using the eSIM for data.
• You don’t want to carry your passport while shopping — eSIM can be bought online before travel.
• You’re a solo traveler or couple — eSIM offers the best cost-to-convenience ratio.
• You want to compare purchase channels first — our how to buy a Japan eSIM covers provider apps, travel platforms, airport kiosks and electronics stores side by side.

Choose Pocket WiFi if:

• You’re traveling with a group of 3 or more — one device covers everyone, often cheaper than multiple SIMs.
• You need to connect tablets and laptops — a pocket WiFi router can connect multiple devices simultaneously.
• You don’t want to worry about phone compatibility — pocket WiFi works with any WiFi-enabled device.

Part 10: Japan SIM Card FAQ

Can I buy a Japan SIM card at the airport?

Yes. Major airports including Narita, Haneda, Kansai, Chubu, Fukuoka, and Naha all have SIM card counters where you can buy a prepaid SIM on arrival, though our buying guide shows how the price compares with ordering first.

How much does a Japan SIM card cost?

Japan SIM card price ranges from:

• $10–$27 USD for 7-30 days
• $20–$70+ USD for voice + data plans
• $30–$100+ USD for unlimited data plans

Do I need a passport to buy a SIM card in Japan?

It depends on the route. A voice SIM with a Japanese number has always required photo ID. A data-only SIM bought at a counter in Japan is where the rules tightened in 2026, when an amendment extended identity verification to data-only SIMs and added passport checks for short-stay visitors. A data-only eSIM bought from an overseas provider before departure involves no ID check, because it is not a Japanese SIM contract.

Where can I buy a SIM card in Tokyo?

You can buy a Japan SIM card in Tokyo at:

• Narita or Haneda airports — counters in arrivals
• BIC Camera — multiple locations across Tokyo
• Yodobashi Camera — multiple locations
• Convenience stores — 7-Eleven, FamilyMart, Lawson

What’s the best SIM card for Japan?

The best SIM card depends on your needs:

• Best budget: b-mobile ($13 for 5GB/10 days)
• Best value for moderate data: IIJmio BIC SIM
• Best with phone number: Mobal
• Best unlimited data: Sakura Mobile
• Best for light users: NTT Communications Prepaid SIM

Can I use a Japan SIM card with an iPhone?

Yes, as long as your iPhone is carrier-unlocked. Physical SIM cards work with any unlocked iPhone that supports the correct SIM size (nano-SIM).

Do Japan SIM cards include a phone number?

Most data-only SIM cards do not include a phone number. If you need a Japanese phone number for calls or SMS, choose a provider like Mobal that offers voice-enabled plans — the calls and SMS plans guide covers who can get one.

Can I buy a Japan SIM card online before I travel?

Yes. Providers like Mobal, Sakura Mobile, and NTT Communications allow you to order online and pick up at the airport or have it delivered to your hotel.

Do I need a Japanese phone number for a short trip?

For most tourists, no. Messaging apps cover person-to-person calls, and hotels can make restaurant bookings for you. You only need a phone number for longer stays, deliveries, or app verifications.

What’s the difference between a tourist SIM and a regular Japanese SIM?

Tourist SIMs are prepaid, require no contract, and don’t require a Japanese address. Regular Japanese SIMs typically require a contract, a Japanese address, and a residence card. If your handset is recent, the device support notes may make a physical card unnecessary.

Can I top up a Japanese prepaid SIM card?

Sometimes. Some prepaid tourist SIMs are single-purchase with no top-up route, while others let you add data through the provider’s app or site. Ask before you pay, and if the answer is no, buy a card sized for the whole trip rather than one part of it.

Which is cheaper, a physical SIM or an eSIM?

An eSIM with the same allowance is usually cheaper, and the gap is widest for small plans. A physical card remains the right buy when your phone cannot take an eSIM, when you want a Japanese number, or when your flight lands at an hour when nothing else is open.

Can I use a Japanese physical SIM in an eSIM-only phone?

No — there is no tray to put it in. Apple’s newer models sold in Japan, including the iPhone 17 series, are eSIM-only, and the iPhone Air has no SIM tray in any market. Those handsets need an eSIM, and the device compatibility list shows which models are affected.

Are SIM prices at the airport higher than in town?

Yes, typically. Airport counters charge more for the same allowance than city electronics stores, and they carry a narrower range of plans. You are paying for immediacy, and it is worth it mainly when your flight arrives late or your phone cannot use an eSIM.

Final Thoughts: Your Japan SIM Card Checklist

Before your trip:

• Check your phone is carrier-unlocked
• Check your phone’s SIM card size (most use nano-SIM)
• Decide if you need a phone number (if yes, choose Mobal or similar)
• Estimate your data needs (1-3GB for short trips, 5-10GB for longer stays)
• Decide whether to buy online in advance or at the airport

On arrival:

• Have your passport ready (required for all purchases)
• Visit a SIM counter at the airport, BIC Camera, or Yodobashi
• Choose your plan and pay
• Insert the SIM card
• Configure APN settings (follow the instructions in the package)
• Test your connection

The bottom line: Physical SIM cards are still a reliable option for Japan travel in 2026. They’re available at airports, electronics stores, and convenience stores across the country. Prices start as low as $13 for budget plans, and you can find options for every trip length and data need.

But if your phone supports eSIM, you might find it more convenient. Check our activate your eSIM for setup instructions, or compare prices in our Japan eSIM providers comparison guide.

Written by the Roami Team, mobile connectivity specialists with experience testing SIM and eSIM providers across Asia. This guide was updated in September 2026 based on publicly available information and provider documentation.

Sources: provider documentation from Mobal, Sakura Mobile, b-mobile, IIJmio, and NTT Communications; Japan’s Ministry of Internal Affairs and Communications identity-verification rules; and publicly available travel resources. USD conversions approximate.