eSIM Tokyo: Your Ultimate Guide to Staying Connected in Japan eSIM Providers and eSIM stores

Tokyo continues to fascinate travelers worldwide with its vibrant cityscape, rich culture, and, of course, its incredible food. However, for those visiting Tokyo for the first time, getting internet access on arrival can be a big challenge. Smooth access to information—whether it's for navigating an unfamiliar city, finding restaurants, contacting friends, or sharing exciting moments on social media—significantly impacts the quality of your trip.

This guide focuses on eSIMs as the best solution for travelers to Tokyo to comfortably use the internet. From basic questions like "What is an eSIM?" to why it's the ideal choice for your Tokyo trip, and covering specific tips for choosing and setting it up, we'll provide all the information you need. With an eSIM, you can fully enjoy your wonderful journey in Tokyo.

What is an eSIM?

eSIM stands for "Embedded SIM," a digital SIM built into devices like smartphones and tablets that you don't need to physically insert or remove. Unlike traditional physical SIM cards, an eSIM allows you to download a profile to your device, which then writes the contract information for your mobile carrier.

Physical SIM Card vs. eSIM

Benefits of eSIMs

No SIM Card Swapping Needed

You won't have the hassle of physically inserting or removing a card like with a physical SIM, and there's no worry about losing it.

Manage Multiple Profiles

You can store profiles from multiple mobile carriers on your device and switch between them as needed. This is super convenient if you're traveling through several countries.

Instant Activation

Once you buy it online, you can immediately download the profile and start using it.

Environmentally Friendly

Since no plastic SIM card is needed, it also helps reduce environmental impact.

Dual SIM Functionality

Many eSIM-compatible devices have dual SIM functionality, allowing you to use both a physical SIM and an eSIM simultaneously. This means you can use your Japanese eSIM for data while keeping your home country's carrier for your primary phone number.

Why an eSIM is Recommended for Your Tokyo Trip

Using an eSIM for your Tokyo trip offers numerous advantages, ensuring a more comfortable and stress-free experience.

Hassle-Free

Upon arriving in Japan, you won't need to bother with buying a SIM card at an airport counter or swapping out a pre-ordered SIM. Just buy it online in advance, scan a QR code upon arrival, and you'll be instantly connected to the internet.

Instant Connectivity

Being able to connect to the internet the moment you land at a Japanese airport means you can immediately check routes to your accommodation on map apps or let family and friends know you've arrived, getting your trip off to a smooth start.

Flexible Plans

There are plans available with various data allowances and validity periods to suit different needs, whether you're on a short trip or a longer stay. You can choose the perfect plan based on your travel itinerary.

Tethering (HOTSPOT) Available

You can share your eSIM's data connection with other devices like laptops, tablets, or even your travel companions' devices through "tethering." This is incredibly convenient for multiple devices or people to use the internet simultaneously.

Dual SIM Compatibility

Many eSIM-compatible smartphones support "Dual SIM" functionality, allowing you to use both a physical SIM and an eSIM simultaneously. This means you can keep your home country's phone number while using the eSIM for data communication in Tokyo. You can enjoy your trip with peace of mind, even if you need your home number for work contacts or bank authentications.

How to Choose an eSIM for Japan

With numerous eSIM providers out there, you'll need to consider a few key points when choosing the best eSIM for your trip to Japan. If you're staying only in Tokyo, you probably don't need to worry about which carrier's network you're using, as Tokyo is well-covered by all major Japanese mobile companies. However, if you plan to venture out of Tokyo to more rural areas like Mt. Fuji or Atami, an eSIM using the Docomo network is highly recommended for stable connections in regional cities.

Data Allowance

The amount of data you need depends on your trip duration and how often you'll use the internet.

• Short trip (up to 5 days) mainly for social media and maps: Around 5GB.
• About a week's stay, including streaming videos and video calls: 5GB to 10GB.
• Long-term stay or heavy data usage: 20GB or more, or an unlimited plan.

Estimate your usage and choose a plan with enough data so you don't run out.

Validity Period

Make sure the eSIM's validity period matches your travel dates. A plan that's too short could leave you without data, while one that's too long might mean wasted money.

Connection Speed and Stability

Stable, high-speed internet is super important for getting around Tokyo and looking up information. Choosing an eSIM provider that uses the networks of major Japanese carriers (NTT Docomo, KDDI (au), SoftBank) will ensure wide and stable coverage.
Japanese eSIM providers typically use these telecommunication companies' networks. If you're buying an eSIM from a non-Japanese provider, it might use roaming to connect. With roaming plans, you might encounter issues where certain apps or websites aren't accessible in Japan. If you're using it for work, it's best to buy an eSIM from a Japanese provider. In Tokyo, any carrier will work fine.
However, if you're also visiting rural areas outside of Tokyo, we recommend an eSIM that uses Docomo's network. Docomo has wide and stable coverage.
Travel Mobile's eSIM uses the Docomo network.

Price

While choosing an eSIM that fits your budget is important, don't just pick the cheapest one. Consider the balance between price, data allowance, and connection quality. It's hard to know the quality until you try it, but as mentioned above, try to choose an eSIM plan that connects directly to Japanese carriers, rather than a roaming plan.

Recommended eSIM Providers

Here are some recommended eSIM providers that offer stable connections not just in Tokyo, but throughout Japan. Each provider has different features, so consider your travel style when making your choice. Since these are online services, you can buy and start using them anytime, anywhere, as long as you have a Wi-Fi connection.

Where to Buy SIM Cards and eSIMs in Tokyo

If you'd rather buy a SIM card or eSIM after arriving in Tokyo, you have several options. While online purchase and setup are the main methods for eSIMs, here's a look at places where you can get both physical SIM cards and eSIMs.

Electronics Retailers

Tokyo has many large electronics retailers like Bic Camera and Yodobashi Camera, which stock a wide range of prepaid SIM cards for foreign visitors.

Abundant Choices

You can choose from various plans, including SIM cards from major carriers and prepaid SIM cards from MVNOs (mobile virtual network operators).

Staff Support

If you have any questions, you can ask the staff for advice to pick the best plan. Some stores even offer multilingual support.

Setup Assistance

Some stores might also help you with SIM card insertion and initial setup.

Convenience Stores

Some convenience stores nationwide, like 7-Eleven, Lawson, and FamilyMart, might carry data-only prepaid SIM cards.

Convenience

Many stores are open 24/7, which is great for buying a SIM whenever you need one.

Important Note

Only a limited number of stores carry them, and plan options are very few, so it might not be your primary purchasing spot. Also, don't expect any setup support from the staff. For eSIMs, we recommend buying online.

Best Places to Buy an eSIM

Online in Advance (Ideal for eSIMs)

This is the easiest and most recommended method. Before you even leave for Japan, you can buy an eSIM plan from a provider's website. If you download the eSIM profile before you arrive, you'll be connected to the internet the moment you land at the airport. This saves you time at the airport and lets you immediately check maps for directions or contact family and friends upon arrival.

Airports

Japan's major international airports (Narita International Airport, Haneda Airport) have stores and vending machines selling SIM cards and Wi-Fi routers for travelers.

SIM Card Vending Machines

You'll find vending machines for prepaid SIM cards for foreign visitors in the airport arrival lobbies. They're easy to use, but keep in mind that plan options are limited, and you'll need to handle the setup yourself.

Temporary Electronics Stores

Sometimes, electronics retailers like Bic Camera or Yodobashi Camera set up temporary shops inside the airport.

eSIM Purchase and Setup Guide

Buying and setting up an eSIM is really simple. Here’s a general guide:

1. Purchasing an eSIM

1. Choose Your Provider: Refer to the recommended providers above to pick an eSIM provider that fits your needs.
2. Select Your Plan: Choose the data allowance and validity period you need.
3. Enter Info & Pay: Follow the instructions to enter your personal details and complete the payment using a credit card or other method.
4. Receive QR Code or Setup Info: After payment, you'll get an email with a QR code to download your eSIM profile, or the necessary manual setup details (like SM-DP+ address and activation code). It's helpful to have this information displayed on a separate device (like a PC or another smartphone) for easy access.

2. Setting up Your eSIM (iPhone)

1. Open Settings App: Open the "Settings" app on your smartphone.
2. Tap Cellular (or "Mobile Data"): From the Settings menu, select "Cellular" or "Mobile Data."
3. Tap Add eSIM (or "Add Cellular Plan"): Choose the "Add eSIM" or "Add Cellular Plan" option.
4. Scan QR Code: Your camera will open. Scan the QR code you received after purchase. If the QR code doesn't scan or if you need to set it up manually, select "Enter Details Manually" and input the provided information.
5. Label Your Plan: Give your new eSIM a clear label, like "Travel eSIM" or "Tokyo eSIM."
6. Set Default Line: Select your new eSIM as the default line for data. Typically, while in Japan, it's convenient to set your new eSIM for data and keep your original physical SIM for calls and messages.

3. Setting up Your eSIM (Android)

Steps may vary slightly by device, but the basic process is the same:

1. Open Settings App: Open the "Settings" app on your smartphone.
2. Tap Network & Internet (or "Connections," "SIM cards & mobile networks," etc.): Select the menu related to communication settings, such as "Network & Internet" or "Connections."
3. Tap Add SIM (or "eSIM"): Select the "SIM" or "eSIM" option, then choose "Add SIM" or "Download a carrier."
4. Scan QR Code: Scan the QR code. If setting up manually, enter the provided information.

Troubleshooting

Cannot Connect to the Internet

• Check if Data Roaming is On: Some eSIMs require data roaming to be enabled.
• Verify APN Settings: Some providers may require specific APN settings. Check your settings and ensure they are entered correctly.
• Toggle Airplane Mode: Turning airplane mode on for a few seconds and then off again can refresh the connection.
• Restart Your Device: Restarting your smartphone often resolves connection issues.

Important Notes When Using an eSIM

To ensure a smooth experience with your eSIM, keep the following points in mind:

Check Device Compatibility

Always verify in advance that your smartphone supports eSIM. Recently released iPhones (XR and later) and some Android models are eSIM compatible.

SIM Unlock Your Phone

If you bought your smartphone outside Japan, it might be SIM-locked by your carrier. If it's SIM-locked, you won't be able to use an eSIM from another carrier. Contact your home carrier in advance to get your phone unlocked.

Monitor Data Usage

If you're on a plan with a limited data allowance, it's important to conserve data. Use data-saving tips like turning off auto-play for videos, stopping background app updates, and using Wi-Fi whenever available.

Be Mindful of Expiry Dates

The validity period of your eSIM is set when you purchase it. Keep track of the expiry date to avoid running out of data during your trip, and consider recharging or buying an extension if needed.

Be Careful Deleting eSIMs

eSIMs used in Japan usually can't be reinstalled. Deleting it is like throwing it away, so make sure not to delete your eSIM.

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To fully enjoy your stay in Tokyo, reliable internet access is essential. Given its ease of use, convenience, and flexibility, an eSIM is likely the ideal communication solution for travelers visiting Tokyo. Free from the hassles of physical SIMs and providing instant connection to Japan's network upon arrival, an eSIM will be your best friend in every aspect of your trip.

Refer to this guide for tips on choosing and setting up your eSIM, and find the perfect one for your travel style to make your Tokyo journey truly wonderful. A comfortable internet environment will undoubtedly make your Tokyo trip richer and more memorable.