Staying connected in Japan is easy once you know how to get a SIM card or mobile plan.
Whether you’re visiting for a short time or living long-term, there are simple options to suit every need.
This guide walks you through the best choices and guides you on how to get started in 2025.
Types of Mobile Options Available
In Japan, mobile connectivity options vary based on your stay duration and device compatibility.
Here are the main types of mobile plans and SIM solutions available in 2025:
Prepaid SIM Cards
- Best for tourists or short stays (up to 90 days)
- No long-term contract or residency required
- Offers fixed data and/or voice call limits
- Available at airports, convenience stores, and electronics shops
- Some include English support and easy setup instructions
Postpaid Mobile Plans
- Suitable for residents with a long-term visa
- Requires a residence card (Zairyu Card) and Japanese address
- Monthly billing system with optional family or bundle plans
- May include phone installment payments
- Contracts typically range from 12 to 24 months
eSIM Options (Digital SIM)
- No physical SIM card needed—activated digitally
- Quick and easy setup via QR code or app
- Ideal for newer smartphones with eSIM compatibility
- Offered by both major carriers and international travel SIM services
- Good option for travelers who want instant access upon arrival
Pocket Wi-Fi Rentals
- Portable Wi-Fi device that connects multiple devices at once
- Perfect for tourists, families, or business groups
- Daily or weekly rental rates, often with unlimited data
- Available at airports or online with hotel delivery
- No SIM card installation or setup required
MVNO (Mobile Virtual Network Operator) Plans
- Affordable alternative to major carriers
- Uses the infrastructure of networks like Docomo, au, or SoftBank
- Plans often have lower data speeds but cost less
- Flexible contracts—some don’t require long-term commitments
- Popular options: Rakuten Mobile, IIJmio, LINEMO, and UQ Mobile
Major Providers
If you need reliable coverage and strong network performance across Japan, the major carriers are your best option.
These carriers offer nationwide coverage, support, and plans for both short-term and long-term use. Here are the top options:
NTT Docomo
- Japan’s largest carrier with excellent nationwide coverage
- Offers both physical SIMs and eSIMs
- Available in most electronics stores and official shops
au by KDDI
- Strong network performance in cities and rural areas
- Good international roaming support
- Can be purchased at au stores or electronics chains like Bic Camera
SoftBank
- Popular with foreign users due to multilingual support
- Offers fast data speeds and handset deals
- Available at SoftBank stores, online, and select travel counters
MVNOs (Budget-Friendly Alternatives)
Rakuten Mobile
- Offers low-cost unlimited data within Rakuten coverage zones
- eSIM available for immediate activation
- Purchase online or in Rakuten Mobile shops
IIJmio
- Reliable MVNO using Docomo and au networks
- Low monthly rates with customizable plans
- Sold online or at partner electronics retailers
LINEMO, UQ Mobile, Y!mobile
- Operated by major carriers but priced for budget users
- Includes special app features and discount bundles
- Available at carrier-affiliated stores or online
Where to Buy
You can easily purchase a SIM card or mobile plan in Japan, whether for a short visit or an extended stay.
Each option has its benefits, tailored to your specific needs. Here’s where to get one:
Airports (e.g., Narita, Haneda, Kansai)
- SIM card kiosks, vending machines, and travel counters
- Ideal for immediate use right after landing
Electronics Stores
- Major chains like Bic Camera and Yodobashi Camera
- Wide selection of SIMs with staff assistance
Convenience Stores
- Some locations offer prepaid data-only SIMs
- Basic options with simple setup guides
Carrier Shops (Docomo, au, SoftBank)
- Full-service support for contracts and phone plans
- Best for long-term residents
Online Stores
- Pre-order SIM cards or eSIMs before arrival
- Delivery available to hotels or home addresses in Japan
Requirements for Purchase
To get a SIM card or mobile plan in Japan, you’ll need a few basic documents.
Requirements vary by plan type and your residency status. Here’s what to prepare:
- Passport: Needed for identification when purchasing a SIM card, especially for tourists.
- Residence Card (Zairyu Card): Required for long-term or postpaid mobile contracts.
- Japanese Address: Necessary for postpaid plans or online orders.
- Payment Method: A credit card or Japanese bank account is typically required for billing purposes.
- Email Address and Phone Number: Used for online registrations and service notifications.
Setting Up Your SIM or Plan
After purchasing your SIM or plan in Japan, the setup is quick and depends on your provider, as well as whether you are using a physical SIM or eSIM.
Here’s how to begin:
- Insert the SIM Card: For physical SIMs, power off your phone, insert the SIM, and then restart the device.
- Activate the SIM: Some SIMs activate automatically, while others require activation via a website or app.
- Configure APN Settings: Adjust your phone’s network settings using the provider’s APN details (usually provided in the package or online).
- Register Online (if required): Some MVNOs require you to complete a brief registration process to link your identity to the plan.
- Download the Provider App: Many carriers offer apps that allow you to track usage, top up data, or manage your account.
Cost and Data Plan Comparison (2025 Rates)
In 2025, Japan offers a range of mobile plans to suit various budgets and needs.
Whether you’re a short-term visitor or a long-term resident, here’s a simplified breakdown of current options:
Prepaid SIM Cards (Short-Term Use):
- Basic Data-Only SIMs: Starting around ¥3,000 (~$22) for limited data.
- Tourist SIM Packages: Range up to ¥5,000 (~$37) with additional data and some included calls.
- Unlimited Data SIMs: Cost approximately ¥9,900 (~$73) for 30 days of unlimited use.
Postpaid Mobile Plans (Long-Term Use):
- Rakuten SAIKYO Plan: Starts at ¥980/month ($7 USD) for 3GB, unlimited at ¥2,880/month ($21 USD).
- Mobal Monthly Plans: Options include 1GB for ¥1,650, 5GB for ¥3,190, and 30GB for ¥4,378.
eSIM Options:
- aloSIM: From $4.50 for 1GB; unlimited (1.5GB/day) for $35 over 10 days.
- Ubigi: Starts at $4 for 1GB (30 days); unlimited for $69/month.
Pocket Wi-Fi Rentals:
- Japan Wireless: From $1.20/day for 500MB, up to $2.10/day for 2GB.
Note: Prices are subject to change due to exchange rates or provider promotions. Always check the latest info directly with the provider.
Tips for Choosing the Right Plan
Japan offers many mobile options, so the best choice depends on your stay, device, and budget.
Use these tips to avoid overpaying or picking the wrong plan:
- Know Your Length of Stay: Short visits are better suited to prepaid SIMs or pocket Wi-Fi; extended stays work best with postpaid plans.
- Check Device Compatibility: Ensure your phone is unlocked and supports Japanese networks or eSIM, as needed.
- Compare Data Needs: Estimate how much data you’ll use—heavy streamers should avoid limited plans.
- Review Coverage Areas: Rural travelers should choose major carriers like Docomo or au for stronger signals.
- Look for English Support: If you’re not fluent in Japanese, pick providers that offer English setup guides or customer service.
- Factor in Payment Methods: Some providers only accept Japanese credit cards or bank accounts for postpaid plans.
The Bottomline
Obtaining a SIM card or mobile plan in Japan is easier than ever, whether you’re staying for a few days or a long-term period.
By understanding your needs and comparing options, you can stay connected without stress.
Explore your options today and select the plan that best suits you.
