In a country where technology seamlessly blends with tradition, staying connected while traveling through Japan is not just a convenience—it’s practically essential.
From navigating the labyrinthine subway systems of Tokyo to translating menu items at a local izakaya, having reliable internet access can transform your Japanese adventure from potentially frustrating to effortlessly enjoyable.
Why is having a local SIM card in Japan so important? While Japan offers free Wi-Fi in many locations, coverage can be spotty and often requires cumbersome registration processes.
International roaming, on the other hand, can quickly lead to eye-watering charges that might exceed the cost of your flight!
As a visitor to Japan, you have several options for staying connected:
- Local SIM cards: Prepaid data-only or voice+data options
- eSIMs: Digital SIM cards that don’t require physical swapping
- Pocket Wi-Fi devices: Portable hotspots for multiple devices
- Public Wi-Fi: Free but limited and sometimes unreliable
- International roaming: Convenient but potentially very expensive
Among these choices, purchasing a local SIM card stands out as the most practical solution for most travelers. Unlike public Wi-Fi, a local SIM provides consistent connectivity wherever you go—from bustling city centers to serene countryside locations.
And compared to international roaming, the cost savings are substantial, often 70-90% less expensive.
“Having my own Japanese SIM card meant I could confidently explore off-the-beaten-path locations, knowing I could always access maps, translation apps, and emergency information if needed.” — A common sentiment among travelers
Whether you’re planning to pre-order your SIM card before departure, pick one up at the airport upon arrival, or venture into a Japanese electronics store, this guide will walk you through everything you need to know about where to buy a SIM card in Japan and how to choose the option that best suits your travel needs.
Let’s ensure you stay connected throughout your Japanese journey, from the moment your plane touches down to your final sayonara.
Understanding Japan’s Mobile Network and SIM Card Options
Japan has one of the world’s most advanced mobile networks, but navigating the options as a visitor can be challenging. Before purchasing a SIM card in Japan, it’s essential to understand the mobile landscape and what options are available to you.
Japan’s Major Mobile Carriers
Japan’s telecommunications market is dominated by three major carriers:
- NTT Docomo – Japan’s largest mobile network operator with the most extensive coverage throughout the country, including rural areas. Their network operates primarily on 800MHz, 1.7GHz, and 2.1GHz bands.
- SoftBank – Popular among foreign visitors due to their English support and foreigner-friendly packages. SoftBank operates on 900MHz, 1.7GHz, and 2.1GHz frequencies.
- au by KDDI – The second-largest carrier with excellent coverage and high-speed data. Their network uses 800MHz, 1.5GHz, and 2.1GHz bands.
Most tourist SIM cards in Japan run on one of these three networks, though you’ll rarely deal with these carriers directly unless you’re staying long-term.
Types of SIM Cards Available for Visitors
When traveling to Japan, you’ll encounter several types of SIM cards:
Data-Only SIM Cards
The most common option for tourists is a data-only SIM card. These provide internet access but don’t allow traditional voice calls or SMS (though you can use apps like WhatsApp or LINE for communication).
Key features:
- Available in various data allowances (1GB, 2GB, 3GB, 5GB, 10GB, etc.)
- Validity periods ranging from 7 to 90 days
- No Japanese phone number included
- No registration or identification required
- Plug-and-play activation in most cases
Voice + Data SIM Cards
If you need to make regular phone calls in Japan, a voice and data SIM might be necessary. However, these are less common for short-term visitors due to stricter registration requirements.
Key features:
- Includes a Japanese phone number
- Allows traditional calls and SMS
- Requires registration with your passport
- Often requires a longer commitment (minimum 30 days)
- More expensive than data-only options
eSIMs for Japan
The newest option for travelers is the eSIM (embedded SIM), which is gaining popularity for its convenience:
Key features:
- Digital SIM that downloads directly to your device
- No physical card to insert or lose
- Can be purchased and activated before arriving in Japan
- Allows you to keep your home SIM card installed
- Often activated instantly via QR code or app
- Requires an eSIM-compatible device
Network Compatibility Issues
Before purchasing a SIM card in Japan, ensure your phone is:
- Unlocked – Your device must not be locked to a specific carrier from your home country. Contact your home provider to unlock your phone if necessary.
- Compatible with Japanese frequencies – Most modern smartphones work in Japan, but some older models may have limited compatibility. Japan primarily uses these bands:
- 4G/LTE: Bands 1, 3, 8, 11, 18, 19, 21, 26, 28, 42
- 5G: n77, n78, n79, n257
- Able to support Japanese APN settings – Some SIM cards require manual configuration of Access Point Name (APN) settings.
Important: iPhones from iPhone 6 and newer and most Android flagships from the last 5 years are generally compatible with Japanese networks. However, some budget phones may have limited band support.
Understanding Data Limitations
Most tourist SIM cards in Japan come with some limitations:
- Fair usage policies may throttle speeds after heavy usage
- Many plans offer “unlimited” data that actually reduces speed after a certain threshold
- Tethering (using your phone as a hotspot) is prohibited on some plans
- VoIP services like Skype or FaceTime may be restricted on certain budget plans
Understanding these options and limitations will help you make an informed decision when purchasing a SIM card for your Japan trip. In the next section, we’ll explore exactly where you can buy these SIM cards throughout Japan.
Also Read: Can You Buy SIM Cards at Japanese Airports
Best Places to Purchase SIM Cards in Japan
Japan offers numerous convenient locations to purchase SIM cards, ensuring you can get connected quickly upon arrival or during your stay. Each option comes with its own advantages in terms of convenience, selection, and service.
Airport Locations
Airports are the most popular and convenient places to buy a SIM card immediately upon arrival in Japan.
- Narita International Airport (Tokyo):
- Terminal 1: SIM card vending machines near Arrivals, plus counters for Japan Welcome SIM and major providers
- Terminal 2: Multiple SIM card vendors in the arrival hall
- Terminal 3: Vending machines near the exit gates
- Haneda Airport (Tokyo):
- International Terminal: JAL ABC Counter and vending machines throughout the arrival area
- Look for the “TelecomSquare” and “Japan Mobile” counters
- Kansai International Airport (Osaka):
- SIM card counters in the arrival hall
- Vending machines near baggage claim
- Dedicated counter at Terminal 1, 1F
- Chubu Centrair Airport (Nagoya):
- SIM card vending machines and counters in the arrival hall
Pro tip: Airport locations often have the widest selection of tourist-oriented SIM cards but may charge a small premium compared to city locations.
Electronics Stores
Major electronics retailers offer excellent selection and knowledgeable staff who can help you choose the right option:
- BIC Camera: Found in major shopping districts across Japan, these stores have dedicated mobile sections with English-speaking staff. Most locations offer a tax-free shopping service for tourists.
- Yodobashi Camera: Another large electronics chain with comprehensive SIM card options from multiple providers. Their Akihabara (Tokyo) and Umeda (Osaka) branches are particularly well-stocked.
- Yamada Denki: These stores typically have a mobile counter with various prepaid SIM options.
- Sofmap: Electronics retailer with good SIM card selection, especially in Tokyo locations.
Convenience Stores
Japan’s ubiquitous convenience stores (konbini) offer basic SIM card options:
| Store Chain | SIM Card Availability | Notes |
|---|---|---|
| 7-Eleven | Limited selection | Data-only SIMs from major providers |
| Lawson | Basic options | Primarily tourist-oriented data packages |
| FamilyMart | Selected locations only | Usually stocks IIJmio and Japan Welcome SIM |
The advantage of convenience stores is their 24/7 operation and presence on virtually every corner in urban Japan. However, they typically stock only data-only SIMs with limited plan options.
Mobile Carrier Shops
Official carrier stores are ideal if you’re seeking voice-enabled SIMs or longer-term contracts:
- Docomo: Japan’s largest carrier with shops in every city
- SoftBank: Extensive network with many English-friendly locations
- au by KDDI: Major carrier with shops throughout Japan
- Rakuten Mobile: Newer carrier with competitive pricing
These stores require more paperwork and time compared to other options but offer the most comprehensive service. For tourists, these are generally only recommended for longer stays as they may require residence cards.
Online Pre-Orders
Pre-ordering online before your trip is increasingly popular:
- Advantages:
- Skip the lines at the airport
- Compare prices and features in advance
- Often cheaper than buying in-person
- Can be delivered to your hotel or for airport pickup
- Popular online services:
- Mobal
- Sakura Mobile
- NINJA WiFi
- Japan Wireless
- IIJmio Travel SIM
Many online providers offer pickup counters at major airports or delivery to your accommodation, making this an extremely convenient option.
SIM Card Vending Machines
Vending machines offering SIM cards can be found at:
- Major airports (as mentioned above)
- Large train stations (Tokyo Station, Shinjuku Station, Shibuya Station, etc.)
- Tourist information centers
- Some shopping malls
These machines typically offer a streamlined selection of the most popular tourist SIM options and accept credit cards. Instructions are usually available in multiple languages, making the purchase process straightforward.
City Pickup Locations
Various city center locations cater specifically to tourists:
- Tourist Information Centers: Major centers in Tokyo, Kyoto, and Osaka offer SIM card sales
- Travelex Counters: Located in popular tourist areas and business districts
- BicSIM Counters: Standalone counters in shopping areas and stations
- Japan Rail Pass Exchange Offices: Some locations also sell SIM cards as a convenience for tourists
Whether you’re landing at the airport and need immediate connectivity or prefer to research options and purchase during your stay, Japan offers abundant choices for buying SIM cards.
For most travelers, airport purchases or online pre-orders provide the optimal balance of convenience and value.
Comparing Japan SIM Card Providers and Plans
When choosing a SIM card for your Japan trip, it’s essential to understand the differences between major providers. Each offers unique advantages depending on your specific needs, budget, and travel duration.
Major SIM Card Providers in Japan
NINJA WiFi
NINJA WiFi has established itself as one of the most traveler-friendly options in Japan, offering:
- Data packages ranging from 3GB to unlimited
- Validity periods of 7-30 days
- Pickup locations at major airports and hotels
- 24/7 English customer support
- User-friendly app for managing your account
Their SIM cards are particularly popular for their reliable coverage across urban and rural areas, utilizing DoCoMo’s extensive network. Prices typically range from ¥3,000 for a 7-day plan to ¥5,000 for 30 days with generous data allowances.
Mobal
Mobal stands out for offering both short-term and long-term options with some unique features:
- Data+voice SIM cards (rare among tourist SIMs)
- No registration or identification process required
- Unlimited plans available
- Worldwide shipping before your trip
- Portion of proceeds donated to charity
Their pricing structure is straightforward, with plans starting at ¥3,990 for unlimited data for 8 days. What makes Mobal particularly attractive is the voice calling capability, which many competitor tourist SIMs don’t offer.
Sakura Mobile
Sakura Mobile caters especially well to longer-term visitors with:
- Flexible contract lengths (from 7 days to several months)
- No cancellation fees
- Airport pickup or delivery to accommodation
- English-speaking support staff
- Options for students and business travelers
Their plans start around ¥4,500 for 30 days with 7GB of data, making them slightly more expensive than some competitors but with excellent customer service and flexibility for plan changes.
IIJmio
IIJmio offers more technical but cost-effective solutions:
- Pay-as-you-go data charging
- Multiple network compatibility
- Lower price points than most competitors
- eSIM options available
- Data-sharing features
Their plans typically start around ¥2,200 for a basic package, but the setup process can be more complex and may require some technical knowledge.
Comparative Analysis
| Provider | Best For | Data Range | Price Range (¥) | Voice Calls | English Support | Special Features |
|---|---|---|---|---|---|---|
| NINJA WiFi | General tourists | 3GB-Unlimited | 3,000-5,000 | No | Excellent | Airport pickup, hotel delivery |
| Mobal | Travelers needing voice | 5GB-Unlimited | 3,990-9,990 | Yes | Excellent | Charitable contribution, no ID required |
| Sakura Mobile | Long-term stays | 7GB-20GB | 4,500-7,000 | Optional add-on | Excellent | Accommodation delivery, student discounts |
| IIJmio | Budget travelers | Pay-as-you-go | 2,200-4,000 | No | Limited | Multiple networks, eSIM options |
Data Allowances and Fair Usage Policies
While many providers advertise “unlimited” data, be aware of fair usage policies. After reaching a certain threshold (typically 3-15GB depending on the plan), your connection speed may be throttled to 128Kbps-1Mbps.
For most travelers using maps, messaging, and social media, even throttled speeds remain usable, but video streaming becomes difficult.
Network Coverage Considerations
Japan has three major mobile networks:
- NTT DoCoMo (largest coverage area, especially in rural regions)
- SoftBank (excellent urban coverage)
- au by KDDI (strong in metropolitan areas)
Most tourist SIM cards operate on the DoCoMo network, offering the most comprehensive coverage throughout Japan. If you’re traveling to remote areas, prioritize providers using DoCoMo’s network.
English Support Availability
The quality of English support varies significantly between providers:
“Having English support available 24/7 saved our trip when we couldn’t get our SIM working in rural Hokkaido. The NINJA WiFi support team walked us through the settings at 11 PM.” – A common sentiment among travelers
Most major tourist-focused providers offer English support through:
- In-person assistance at airport counters
- 24/7 hotlines
- Live chat support
- English documentation and setup guides
Choosing Based on Your Travel Style
- Short city trips: Consider NINJA WiFi or a budget option from a vending machine
- Extended stays: Sakura Mobile offers better value for weeks or months
- Business travelers: Mobal’s voice+data SIMs ensure you’re always reachable
- Tech-savvy travelers: IIJmio provides cost savings if you’re comfortable with more complex setup
The right Japan SIM card depends on your specific needs, but understanding these provider differences ensures you’ll stay connected without overpaying for features you don’t need.
Step-by-Step Guide to Buying and Activating Your Japan SIM Card
Purchasing and setting up a SIM card in Japan is straightforward when you know what to expect. This step-by-step guide will walk you through the entire process from preparation to troubleshooting.
What You’ll Need
Before purchasing a SIM card in Japan, make sure you have:
- A valid passport – Required for all SIM card purchases in Japan due to registration requirements
- An unlocked smartphone – Your phone must be carrier-unlocked to accept Japanese SIM cards
- Compatible device – Most modern smartphones work with Japanese networks, but check that your phone supports these frequencies:
- 4G/LTE: Bands 1, 3, 8, 18, 19, 26, 28, 42
- 5G: Bands n77, n78, n79 (if you want 5G service)
Important: If you purchased your phone through a carrier contract in your home country, contact your provider to ensure it’s unlocked before traveling to Japan.
The Purchase Process
At Airports:
- Locate a vendor – Follow signs for “SIM cards” or “Mobile Services” after clearing customs
- Present your passport – Staff will scan or photocopy it for registration
- Select your plan – Choose based on your duration of stay and data needs
- Payment – Most vendors accept credit cards and cash (Japanese yen)
- Receive your SIM kit – This includes the SIM card and activation instructions
At Electronics Stores:
- Find the mobile section – Usually labeled “SIM Cards” or “携帯電話” (keitai denwa)
- Request assistance – Many stores have English-speaking staff or translation services
- Show your passport – Required for the registration process
- Choose your plan – Staff can help recommend options based on your needs
- Complete payment – Major credit cards and cash accepted
- Receive activation instructions – Often provided in multiple languages
For Online Pre-orders:
- Collect your SIM – Either at the airport counter or your accommodation
- Verify contents – Ensure you have the SIM card and instruction manual
- Follow the enclosed setup guide – Usually available in multiple languages
Activating Your SIM Card
- Power off your phone completely
- Insert the SIM card using the provided SIM ejector tool
- For physical SIMs: Locate your SIM tray (usually on the side of your device)
- For eSIMs: Skip this step and follow the QR code scanning instructions
- Power on your device
- Follow the activation instructions provided with your SIM package:
- Some SIMs activate automatically when inserted
- Others require visiting a specific website or sending an activation text
- eSIMs typically require scanning a QR code or entering details manually
Configuring APN Settings
If your internet doesn’t work automatically after activation, you may need to configure the Access Point Name (APN) settings:
- Go to Settings on your smartphone
- Navigate to:
- Android: Network & Internet → Mobile network → Advanced → Access Point Names
- iPhone: Settings → Cellular → Cellular Data Network or Mobile Data Network
- Add a new APN with the details provided in your SIM package, which typically include:
- Name: (Provider name, e.g., “Docomo” or “SoftBank”)
- APN: (specific address, e.g., “jprmobile.com”)
- Username and Password: (if required)
- Authentication type: (usually PAP or CHAP)
Common APN Settings for Major Providers:
| Provider | APN | Username | Password | Authentication |
|---|---|---|---|---|
| Docomo | dmm.jp | none | none | none |
| SoftBank | plus.4g | none | none | none |
| au/KDDI | au.au-net.ne.jp | none | none | CHAP |
| Rakuten | rakuten.jp | rakuten | rakuten | CHAP |
Troubleshooting Common Issues
No Internet Connection
- Check if data is enabled – Ensure mobile data is turned on in your settings
- Verify APN settings – Double-check the configuration against the provided instructions
- Restart your device – Sometimes a simple restart resolves connection issues
- Check data balance – Use the provider’s app or website to confirm you haven’t used all your data
SIM Not Recognized
- Ensure proper insertion – Remove and reinsert the SIM card
- Clean the SIM card – Gently wipe the gold contacts with a soft, dry cloth
- Try another device – If possible, test the SIM in another compatible phone
Slow Connection Speeds
- Check your location – Connection quality varies by area; try moving to a more open space
- Monitor data usage – Some providers throttle speeds after reaching certain usage thresholds
- Restart your device – This can clear temporary network issues
- Check network settings – Ensure you’re not accidentally connected to a 3G-only network
SIM Deactivation
If your SIM card suddenly stops working:
- Verify expiration date – Prepaid SIMs have fixed validity periods
- Check for registration issues – Some SIMs require periodic verification
- Contact customer service – Most providers offer English-language support
Pro Tip: Save the customer service number of your SIM provider in your contacts before you need it. Most providers offer English-language support via phone or chat.
With your SIM card properly activated and configured, you’ll be ready to navigate Japan with confidence, access translation apps, use maps, and stay connected with friends and family back home.
Choosing the Right SIM Card for Your Japan Trip
Selecting the ideal SIM card for your Japanese adventure isn’t a one-size-fits-all decision. With numerous options available, you’ll need to consider several key factors to ensure you stay connected without overspending or encountering technical issues.
Trip Duration: Short Visit vs. Extended Stay
The length of your stay significantly impacts which SIM card option makes the most sense:
- Short-term visitors (1-2 weeks): Opt for prepaid tourist SIM cards with fixed-day packages (7, 15, or 30 days). These typically offer sufficient data without the commitment of a contract.
- Medium-term travelers (1-3 months): Consider renewable prepaid SIMs that allow you to top up as needed.
- Long-term residents (3+ months): Explore contract options with major carriers like Docomo, SoftBank, or au, which may require residence cards but offer better value for extended stays.
Data Requirements: Casual Browser vs. Power User
Your internet usage patterns should guide your data allowance decisions:
| User Type | Typical Usage | Recommended Data |
|---|---|---|
| Light user | Messaging, email, occasional maps | 1-3GB |
| Average traveler | Social media, navigation, some video | 5-10GB |
| Heavy user | Video streaming, constant connectivity | 15-30GB+ |
| Digital nomad | Work uploads/downloads, video calls | Unlimited or 50GB+ |
Pro tip: Most tourists underestimate their data needs in Japan. Between posting travel photos, navigating unfamiliar cities, and translating menus, you’ll likely use more data than at home.
Voice Call Necessity
Most tourist SIMs in Japan are data-only, but you have options if voice calling is important:
- Data-only SIM: Perfect if you communicate primarily through messaging apps like LINE, WhatsApp, or FaceTime.
- Voice-enabled SIM: These require more documentation but allow traditional phone calls to local numbers.
- Hybrid solution: Use a data SIM with internet-based calling apps that can dial regular phone numbers (like Skype Out).
Budget Considerations
SIM card prices in Japan vary widely based on features and providers:
- Budget options: Basic data-only SIMs start around ¥1,500-3,000 ($10-20) for 7-15 days.
- Mid-range: 15-30GB plans for 2-4 weeks typically cost ¥3,000-5,000 ($20-35).
- Premium services: Unlimited data or voice-enabled SIMs can cost upward of ¥6,000 ($40+).
Remember that buying at airports or tourist centers often includes a markup compared to pre-ordering online.
Device Compatibility Check
Before purchasing, ensure your device works with Japanese networks:
- Frequency bands: Japan uses different bands than some countries. Most modern smartphones support global bands, but older models may have limitations.
- Unlocked status: Your phone must be carrier-unlocked to use a Japanese SIM.
- Physical SIM type: Confirm whether your device uses standard, micro, nano SIM, or eSIM technology.
You can check compatibility by:
- Contacting your home carrier about international use
- Checking your phone specifications against Japanese network requirements (typically 3G: 2100MHz, 4G LTE: Bands 1, 3, 8, 18, 19, 26, 28, 42)
- Using online IMEI checkers provided by Japanese SIM vendors
eSIM vs. Physical SIM: The Modern Alternative
The emerging eSIM technology offers several advantages for travelers:
eSIM Benefits:
- Convenience: No physical card to insert or lose
- Instant activation: Purchase and set up digitally before arrival
- Dual SIM capability: Keep your home number active while using Japanese data
- Environmentally friendly: Reduces plastic waste
Physical SIM Benefits:
- Universal compatibility: Works with all unlocked phones, not just newer models
- Easy troubleshooting: Can be swapped between devices if needed
- Wider availability: More providers offer physical SIMs
Device Compatibility for eSIMs:
- iPhone XS/XR and newer
- Google Pixel 3 and newer
- Samsung Galaxy S20 and newer
- Recent iPad Pro/Air models
- Select newer laptops
Ultimately, the right SIM card choice depends on balancing these factors against your specific travel needs. By considering trip length, data usage, call requirements, budget, and device compatibility, you’ll find the perfect connectivity solution for your Japanese adventure.
Pre-ordering SIM Cards Online: The Convenient Option
Pre-ordering your SIM card before arriving in Japan is increasingly becoming the preferred option for savvy travelers. This approach eliminates the stress of searching for a SIM card when you’re jet-lagged and trying to navigate a new country.
Benefits of Pre-ordering Your Japan SIM Card
Pre-ordering a Japan SIM card offers several distinct advantages:
- Skip the airport queues – Avoid waiting in long lines at airport counters
- Guaranteed availability – Never worry about SIM cards being sold out
- Better pricing – Online rates are typically 10-20% cheaper than in-store purchases
- More time to research – Compare options thoroughly before making a decision
- English support – Most online providers offer comprehensive English customer service
- Convenience – Have your connectivity solution ready upon arrival
Many travelers don’t realize that airport SIM card counters can have wait times of 30+ minutes during peak tourist seasons. Pre-ordering eliminates this hassle entirely.
Top Websites for Ordering Japan SIMs
Several reliable providers offer online pre-ordering services with English support:
| Provider | Special Features | Data Plans | Price Range (¥) |
|---|---|---|---|
| Sakura Mobile | English support, flexible plans | 1GB-unlimited | 3,000-7,000 |
| Mobal | Voice+data options, no APN settings | 1GB-unlimited | 3,990-6,990 |
| Japan Wireless | Tourist-focused, simple activation | 3GB-unlimited | 2,980-5,980 |
| IIJmio | eSIM options, competitive pricing | 2GB-20GB | 2,200-4,400 |
| NINJA WiFi | Both SIM and pocket WiFi options | 3GB-unlimited | 3,200-6,500 |
“I pre-ordered my SIM card from Sakura Mobile before my trip to Tokyo. It was waiting for me at my hotel when I arrived, and I was online within minutes. Absolute game-changer for my Japan experience.” – Typical customer review
Delivery Options: How to Receive Your Pre-ordered SIM
When pre-ordering a SIM card for tourists in Japan, you typically have several delivery options:
- Airport Pickup
- Available at major airports including Narita, Haneda, Kansai, and Chubu
- Usually involves picking up from a designated counter or locker
- Most convenient for those who want connectivity immediately upon arrival
- Hotel Delivery
- SIM card will be waiting at your accommodation’s front desk
- Requires providing accurate hotel information during ordering
- Perfect for those who don’t want to deal with pickup procedures after a long flight
- Residential Address Delivery
- For longer-term visitors staying at an apartment or residence
- Usually requires ordering 5-7 days in advance
- May require signature upon delivery
- International Shipping
- Some providers ship directly to your home country before departure
- Allows you to set up and test your SIM before traveling
- Usually incurs additional shipping fees
Activation Process for Pre-ordered SIMs
Most pre-ordered Japan SIM cards follow a similar activation process:
- Unpack your SIM card and keep all documentation for reference
- Power off your phone completely
- Insert the SIM card using the provided ejector tool
- Power on your device and wait for network detection
- Follow the specific APN settings provided in the documentation (if required)
- Open your browser and complete any registration steps (often scanning a QR code)
- Test connectivity by browsing a website or using an app
Most pre-ordered SIMs are partially activated already, making the process much simpler than buying in-store.
Pricing Advantages of Pre-ordering
Pre-ordering your cheap SIM card Japan option online typically offers better value:
- Discounts of 10-20% compared to in-store purchases
- Special online-only plans with more data
- Promotional codes frequently available on travel blogs and forums
- Bundle deals when ordering multiple SIMs for group travel
- No upselling pressure that often happens at physical stores
For example, a standard 10GB/15-day tourist SIM might cost ¥5,000 at an airport counter but only ¥4,000 when pre-ordered online—a significant saving that could cover a nice meal in Tokyo.
Planning Timeline: When to Pre-order
For the smoothest experience with your prepaid SIM card Japan purchase:
- 3-4 weeks before travel: Research providers and compare plans
- 2 weeks before travel: Place your order (longer for international shipping)
- 1 week before travel: Confirm your order and delivery details
- Upon arrival: Collect and activate your SIM
By pre-ordering your SIM card, you’re ensuring one less thing to worry about during your Japanese adventure, allowing you to stay connected from the moment you arrive.
Long-term SIM Options for Extended Stays in Japan
If you’re planning to stay in Japan for more than a few weeks as a student, working professional, or long-term visitor, tourist SIM cards won’t be sufficient for your connectivity needs. Fortunately, Japan offers several long-term mobile solutions designed specifically for foreign residents.
Options for Students, Expats, and Long-term Visitors
Students studying in Japan can benefit from special plans offered by providers like Sakura Mobile and Mobal, which provide discounted rates with a valid student ID.
These plans typically include larger data allowances and sometimes voice services, perfect for maintaining regular contact with classmates and professors.
“As a student in Tokyo, I needed reliable internet for research and staying connected with my university. Sakura Mobile’s student plan gave me 20GB monthly at a rate that fit my budget.” – Common student experience
Expats and working professionals require robust connectivity solutions that mirror what locals use. Companies like GTN Mobile and IIJmio offer plans specifically designed for foreign residents with English support throughout the contract period.
Long-term visitors (staying 3+ months but not permanently) can find middle-ground options through providers like LineMobile and Y!mobile that offer flexible contracts with cancellation options.
Contract Plans vs. Monthly Prepaid Options
| Plan Type | Pros | Cons | Best For |
|---|---|---|---|
| 2-Year Contracts | Lower monthly rates, Better data packages, Full network access | Cancellation fees (9,500+ yen), Requires residence card, Credit check | Expats staying 1+ years |
| Monthly Prepaid | No contract commitment, Simpler application, No cancellation fees | Higher monthly cost, Limited data options | Students, Visitors (3-12 months) |
| 6-Month Plans | Middle-ground pricing, Moderate commitment | Limited availability | Working holiday visa holders |
Contract plans from major carriers (Docomo, au, SoftBank) offer the most comprehensive coverage and fastest speeds but typically require a 2-year commitment with early termination fees. These plans include options for the latest devices through installment plans.
Monthly prepaid options provide flexibility for those uncertain about their length of stay. Providers like Sakura Mobile and Mobal have created niche services for foreigners that balance flexibility with reasonable costs.
Documentation Requirements
To obtain a long-term SIM card in Japan, you’ll typically need:
- Residence Card (在留カード, Zairyu Card) – The most commonly required document
- Japanese bank account (for contract plans with major carriers)
- Credit card (Japanese or international)
- Proof of address (utility bill or official mail)
- Personal seal (印鑑, inkan) for some traditional carriers
MVNOs (Mobile Virtual Network Operators) generally have more relaxed requirements than major carriers, making them popular choices for foreigners.
Some providers like Sakura Mobile and GTN Mobile specifically cater to foreigners and have streamlined application processes.
MVNOs with English Support
Several MVNOs offer comprehensive English support for foreigners:
- Sakura Mobile: Complete English service from application to customer support
- Mobal: English-speaking staff and simple setup process
- IIJmio: English website and basic support services
- GTN Mobile: Specializes in serving foreigners with multilingual support
- Aeon Mobile: English application forms and some in-store English support
BIC SIM (available at BIC Camera stores) offers in-person English assistance during the setup process, which can be invaluable for those who prefer face-to-face support.
Setting Up Your Long-term SIM
The process typically involves:
- Choosing a provider based on your needs and Japanese language ability
- Visiting a shop or applying online (with your residence card details)
- Selecting a plan (data-only or with voice)
- Completing identity verification
- Setting up payment (usually automatic withdrawal from bank or credit card)
- Receiving and activating your SIM card
Pro tip: For the best rates on long-term plans, consider visiting electronics stores like Yodobashi Camera or BIC Camera where special in-store discounts are often available for new sign-ups that aren’t advertised online.
Cancellation Procedures
When leaving Japan, remember that cancelling contracts requires advance notice:
- Major carriers typically require 30 days notice
- Cancellation fees apply if terminating before contract completion
- Some providers require in-person cancellation at a shop
- Always return rental devices (if applicable) to avoid additional charges
MVNOs generally offer simpler cancellation procedures, often allowing online or phone-based contract termination, making them more convenient for foreigners.
Frequently Asked Questions About Japan SIM Cards
Can I use my home country’s SIM card in Japan?
You can use your home SIM card in Japan through international roaming, but this often comes with extremely high fees. Most carriers charge premium rates for data usage abroad, sometimes $10-15 per day or more. Check with your provider before departure as some offer special travel plans for Japan. Generally, purchasing a local Japanese SIM card is much more economical for trips longer than 2-3 days.
Is my phone compatible with Japanese networks?
Most modern unlocked smartphones (manufactured after 2018) will work with Japanese networks. Japan primarily uses these bands:
- 4G/LTE: Bands 1, 3, 8, 18, 19, 26, 28, 42
- 5G: Bands n77, n78, n79, n257
To check compatibility:
- Ensure your phone is carrier unlocked
- Verify your phone supports at least some of the bands listed above
- For iPhones: iPhone 6s and newer models are generally compatible
- For Android: Most international versions of Samsung, Google, Xiaomi, and other major brands will work
What happens if I run out of data?
When you exhaust your data allocation on a Japanese SIM card:
- Your speed will typically be throttled to 128Kbps (very slow)
- You’ll maintain basic connectivity for messaging apps and email
- Video streaming and navigation become difficult or impossible
Options for adding more data:
- Most prepaid SIMs don’t allow top-ups (they’re truly prepaid)
- Some providers like IIJmio and Mobal offer data add-on packages
- For eSIMs, you can often purchase additional data through the provider’s app
- As a last resort, you can purchase a new SIM card
Can I make phone calls with a Japanese SIM card?
This depends on the type of SIM card you purchase:
- Data-only SIMs: No traditional voice calling capability (most common for tourists)
- Voice+Data SIMs: Allow regular phone calls but require additional registration with your passport
- Workarounds for data-only SIMs:
- Use VoIP services like WhatsApp, LINE, or Skype
- Some providers offer “Japan Phone Number” add-ons that work through their apps
How do I troubleshoot network connectivity issues?
If you experience connection problems with your Japanese SIM card:
- Check APN settings: Ensure they match the provider’s instructions
- Toggle Airplane mode: Turn it on and off to force reconnection
- Restart your device: Often resolves temporary connection issues
- Check coverage area: Some rural areas have limited coverage
- Verify data balance: Use the provider’s app or website to check remaining data
- Contact customer support: Most tourist SIM providers offer English support via:
- LINE messaging app
- Phone hotlines (check your SIM package)
Do I need to return the SIM card after use?
For most prepaid tourist SIMs, no return is necessary. They automatically deactivate after the service period ends. However:
- Some rental SIMs (less common) require return via prepaid envelope
- eSIMs never need physical return as they’re digital
- For long-term contract SIMs, you may need to formally cancel service
Can I extend my SIM card validity if my trip gets longer?
Extension options vary by provider:
- Most airport/convenience store SIMs cannot be extended
- Some online providers like Mobal offer flexible plans
- eSIM providers typically allow purchasing additional packages
- For significant extensions, purchasing a new SIM is often necessary
Are there any hidden fees with Japanese SIM cards?
Japanese SIM cards for tourists are generally straightforward with pricing, but watch for:
| Potential Additional Costs | Typical Amount | Notes |
|---|---|---|
| Activation fees | ¥3,000-¥5,000 | More common with voice SIMs |
| International calling rates | ¥20-¥100/min | If using voice-enabled SIMs |
| Data overage charges | ¥500-¥1,500 | On some flexible plans |
| SIM card reissue fee | ¥2,000-¥3,000 | If you lose your SIM |
How can I make international calls from Japan?
Options for calling internationally:
- Use internet-based apps (recommended): WhatsApp, Skype, FaceTime, LINE
- Voice-enabled SIM cards: Check specific international rates with your provider
- International calling cards: Available at convenience stores
- Rental phones: Available at airports for those who need frequent international calling
Will my Japanese SIM work in other Asian countries?
Most Japan-specific SIMs will not work in other countries. If you’re visiting multiple Asian destinations:
- Consider multi-country Asian SIM cards (AIS, Traveler SIM)
- Look into global eSIMs that cover multiple countries
- Some providers offer Asia-wide packages at a premium
Tips for Staying Connected in Japan Beyond SIM Cards
Staying connected in Japan isn’t limited to just purchasing a SIM card. There are several complementary strategies and alternatives that can enhance your connectivity experience while traveling through the Land of the Rising Sun.
Alternative Connectivity Options
Pocket WiFi Devices
Pocket WiFi remains one of the most popular connectivity solutions for travelers in Japan, especially for groups or families.
- Benefits: Connect multiple devices simultaneously (usually 5-10), unlimited data options available, consistent coverage throughout Japan
- Where to rent: Major airports, online reservation services like Japan Wireless, Global Advanced Communications, or Ninja WiFi
- Cost: Typically ¥700-1,500 per day, with discounts for longer rental periods
- Best for: Families, groups of travelers, or heavy data users who need to connect multiple devices
Free WiFi Spots
Japan has significantly improved its public WiFi infrastructure in recent years, especially in tourist areas:
- Japan Connected-free WiFi: A nationwide service available in airports, train stations, convenience stores, and tourist spots
- Free WiFi Passport: Available in many metropolitan areas including Tokyo, Osaka, and Kyoto
- Major chains with free WiFi: Starbucks, 7-Eleven, FamilyMart, McDonald’s, and most shopping malls
- Tourist information centers: Almost all offer free WiFi connections
Pro Tip: Download the “Japan WiFi” app before your trip, which helps locate and connect to free WiFi spots throughout the country.
Essential Apps for Japan Travel
Having the right apps installed before arriving can make your Japan experience much smoother:
| App Category | Recommended Apps | Features |
|---|---|---|
| Communication | LINE, WhatsApp | Preferred messaging platforms in Japan |
| Translation | Google Translate, Papago | Camera translation for menus and signs |
| Navigation | Google Maps, Japan Travel by NAVITIME, Tokyo Subway Navigation | Offline maps, train schedules, platform guidance |
| Transportation | Japan Transit Planner, JR-EAST Train Info | Real-time updates, route planning |
| Dining | GuruNavi, Tabelog | Restaurant reviews and reservations |
| Emergency | Safety tips, Japan Official Travel App | Disaster alerts, emergency information |
Offline Navigation Strategies
Even without constant internet access, you can navigate Japan effectively:
- Download offline maps: Before leaving WiFi, download the areas you’ll visit in Google Maps for offline use
- Screenshot important information: Save images of hotel addresses in Japanese, train schedules, and meeting points
- Download train apps with offline functionality: Apps like Tokyo Subway Navigation work without internet connection
- Carry a physical map: Tourist information centers provide excellent free maps with major landmarks clearly marked
- Learn basic directional phrases in Japanese: Simple phrases like “Where is…?” (… wa doko desu ka?) can be invaluable
Data-Saving Strategies
Make your SIM card data allowance last longer with these tactics:
- Disable automatic app updates and background data refresh
- Use data compression browsers like Opera Mini or Chrome’s Lite mode
- Download entertainment content (music, videos, podcasts) while on WiFi
- Utilize offline functionality in apps like Google Maps, Netflix, and Spotify
- Adjust photo backup settings to upload only when connected to WiFi
- Use messaging apps sparingly as they can consume significant data when sending photos or videos
- Enable data saver mode in your phone’s settings
Local Insight: Many Japanese restaurants, cafes, and even some trains now offer power outlets or charging stations, allowing you to keep your devices powered throughout the day.
By combining a suitable SIM card with these additional connectivity strategies, you’ll ensure you stay connected throughout your Japanese adventure, whether you’re navigating the bustling streets of Tokyo or exploring remote areas in Hokkaido.