【6% Off】Japan eSIM Guide: Everything You Need about eSIM

Are you worried about internet connectivity when staying in Japan? This problem can be instantly solved by downloading Japan eSIM (embedded SIM) onto your smartphone. Why not try this convenient Japan eSIM that eliminates the worry of losing a physical SIM card?

In this article, we will explain how to choose and the advantages and disadvantages of eSIM Japan in a beginner-friendly manner . If you are interested, please read until the end.

【6% Off】Popular Japan eSIM Plans

Check out the 6% Off Japan eSIM plans below! The price shown is already discounted for 2025.

Japan eSIM Detailed Comparison

Overview of Japan eSIM options for Tourists

Trip.com Japan eSIM

• 1GB/day data for 3 day = $2.60 USD
• 1GB/day data for 5 day = $3.71 USD
• 1GB/day data for 7 day = $4.93 USD
• 1GB/day data for 15 day = $10.00 USD

Japan eSIM introduces an array of affordable data plans perfect for those visiting Japan, offering a seamless connection across both expansive national reaches and specific metropolitan areas such as Tokyo, Osaka, and Kyoto. Each plan, uniformly priced, is meticulously designed to cater to various travel needs, ensuring consistent service nationwide.

Upon opting for any of Japan eSIM's diverse packages, from daily high-speed data allowances to comprehensive monthly plans, a QR code is swiftly delivered, streamlining the setup process to get you online promptly—ideal for activation even as you await your luggage at the airport. The setup process, from purchase to connectivity, is impressively quick, requiring no more than a few minutes to complete.

Japan eSIM's offerings are diverse, with durations spanning from a single day up to 30 days, and data volumes ranging from 500MB to an unlimited quota, tailored to match the duration and intensity of your travel needs. Competitive pricing starts at just US$0.93 for a 500MB single-day plan, extending up to US$44.64 for an unlimited data plan over 30 days, ensuring there's a budget-friendly option for every type of traveler. Powered by a robust 4G LTE network, Japan eSIM guarantees reliable internet access across the country, enabling travelers to enjoy uninterrupted service for navigation and streaming

Trip.com Japan eSIM Features

• Instant online purchase and activation process.
• High-speed 4G LTE network
• Various data plans available, from 3 day to 30 days.
• Offers unlimited data plans in select countries.
• 24/7 customer support in multiple languages.
• Data only, does not support call

Mobal eSIM Japan

• 1GB data for 8 day = $12.67 USD
• 100GB data for 31 day = $52.39 USD

Mobal, a well-known provider in Japan. They offer seven different data-only eSIM packages, starting from a simple 1GB plan for 8 days at approximately $12.67 USD, to a larger 100GB plan for 31 days at around $52.39 USD. Additionally, there's an option for a SIM that includes both voice and data services.

Operating on Japan's premier Docomo network ensures that Mobal's users enjoy widespread 4G LTE coverage without the hassle of roaming. Activating these data SIMs is straightforward and fast, usually taking about 15 minutes. Customers will receive an email directing them to Mobal's service site to obtain their eSIM QR code, typically within 10 minutes of request.

In performance terms, Mobal offers average speeds of 24.76Mbps. This facilitates quick website loading and relatively smooth video calls.

Mobal Japan eSIM Features

• High-speed 4G LTE network
• Instant online purchase and activation process.
• Various data plans available, from short-term to long-term use.
• Competitive pricing and no roaming charges.
• Data-only and voice calls are available

Airalo eSIM Japan

• 1GB data for 7 day = $4.50 USD
• 2GB data for 15 day = $6.50 USD
• 3GB data for 30 day = $8.50 USD

Airalo, partnering with SoftBank—one of Japan's leading carriers—provides eSIMs that ensure stable and reliable data connectivity across Japan. Their Moshi Moshi eSIM series includes options ranging from 7 to 30 days. The entry-level 7-day plan offers 1GB of data for approximately $4.50 USD, while the comprehensive 30-day option provides up to 20GB, costing around $26.00 USD.

The process to obtain an Airalo eSIM is streamlined and efficient. For instance, after selecting the 2GB/15-day Moshi Moshi eSIM and completing the purchase, the eSIM QR code is promptly made available, ensuring users can activate their service within 15 minutes. Registration is necessary to acquire this eSIM.

In testing, Airalo's eSIM demonstrated dependable performance, with an impressive average download speed. The service facilitated quick webpage loading and smooth streaming on platforms like YouTube, without interruption or buffering. For individuals with high data usage needs, Airalo stands as a viable option.

Airalo Japan eSIM Features

• High-speed 4G LTE network
• Download speed of 141.61Mbps
• Offers eSIMs for over 190+ countries and regions.
• Instant online purchase and activation process.
• Various data plans available, from short-term to long-term use.
• Competitive pricing and no roaming charges.

Sakura Mobile

Sakura Mobile is another option for visitors to Japan, popular among both short and long-term stays. They also offer eSIMs with prices based on the duration of stay (up to 90 days) and data usage. Their cheapest option is a 3-day, 1GB eSIM for $17.96. Sakura Mobile uses Docomo as their main provider, ensuring good coverage throughout Japan. Activation is simple, with customers receiving a QR code via email. Despite being more expensive, Sakura Mobile had the slowest performance among the eSIMs tested, with an average download speed of only 7.9Mbps.

Ubigi Japan eSIM

• 500MB/day data for 1 day = $2.57 USD
• 50GB data for 30 day = $64.02 USD

Ubigi serves as a worldwide eSIM provider, catering to more than 200 destinations globally. Despite being a newer entrant in Japan's eSIM landscape, Ubigi offers a broad spectrum of plans, ranging from cost-effective daily options with 500MB of data at approximately $2.57 USD to more substantial month-long offerings that include up to 50GB of data for about $64.02 USD, meeting a wide array of travel requirements.

The process of acquiring an eSIM from Ubigi is straightforward. Payment completion is quickly followed by the receipt of a QR code via email, facilitating immediate activation. Ubigi partners with NTT Docomo, ensuring expansive and reliable network coverage across Japan, backed by Transatel, a subsidiary of NTT.

In evaluations, the 3GB Ubigi eSIM provided dependable connectivity, with average data speeds reaching 73.72Mbps

Ubigi Japan eSIM Features

• High-speed 4G LTE network
• Download speed of 73.72Mbps
• Offers eSIMs for over 200 countries and regions.
• Instant online purchase and activation process.
• Various data plans available, from short-term to long-term use.

SoftBank eSIM

SoftBank eSIM is powered by SoftBank, one of Japan's major carriers. They offer data-only plans for different durations, with options for unlimited 4G data or a daily allowance of high-speed 4G data. The prices vary depending on the plan chosen. While SoftBank eSIM offers stable and fast internet, there may be compatibility issues with certain phone models and a waiting period before activation.

How We Tested the Performence of each Japan eSIM

Testing Methodology

Testing Process

To enhance the accuracy of our findings, we revisited the evaluation for a subset of eSIMs at an alternate location in Tokyo on a subsequent day. This step was particularly crucial for a provider that exhibited significant performance changes between the initial and follow-up tests.

Which is Better for Japan Travel? Comparison of eSIM, SIM cards, and Wi-Fi routers

Below is a table summarizing the three features and considerations.

Based on the features and disadvantages, please choose the most suitable option according to your usage scene and purpose.

Differences between Japan eSIM and SIM cards

eSIM and SIM cards are both used for communication with smartphones overseas. Although they have many similarities, there are several significant differences. SIM cards are plastic cards that are inserted into dedicated slots on smartphones. When changing carriers, for example, it is necessary to physically exchange this card.

On the other hand, eSIM does not exist as a physical card. It is an electronic SIM that is already built into the device. Carrier changes can be made through settings on the device, eliminating the need for physical card exchange.

Voices of eSIM users in Japan

With Trip.com's eSIM, you can flexibly choose a plan according to your needs for the duration of your stay and data usage, making it a popular choice for those who want to enjoy the internet freely in Japan.

【User Comments】

The setup is very easy, quick, and there are no coverage issues.

I was able to get the QR code immediately after purchase and set up the eSIM on the same day. I traveled from Osaka to Nara, and the coverage was good. I will buy it again.

The setup was easy, and there were no issues with the signal! I will use it again when I return temporarily!

3 Benefits of Using Japan eSIM

1. Can be used immediately upon arrival in Japan

One of the major benefits of eSIM is that you can have internet access smoothly from the moment you arrive at the airport in Japan.

With traditional SIM cards, you would need to purchase them at the airport shop or receive a SIM card that you pre-ordered. However, with eSIM, you can download it in advance and connect to the network as soon as you get off the plane. This allows you to efficiently arrange for taxis or navigate your way to the hotel, making your trip more convenient.

2. No risk of loss or damage

Traditional SIM cards are very small and require careful handling. Especially when replacing them during your trip, the risk of loss or damage increases.

On the other hand, eSIM is not a physical card, so you don't have to worry about losing or damaging it. There is no need to go through the hassle of opening the SIM tray with a small pin or worry about accidentally dropping the SIM card.

3. Dual SIM capability

By utilizing eSIM, you can use dual SIMs. Dual SIM allows you to use two networks on one smartphone.

This means you can have a SIM card that can be used in Japan and another one for overseas, allowing you to smoothly switch network environments when traveling between Japan and other countries. With dual SIM, you don't have to go through the hassle of contracting for internet access every time you visit multiple countries.

3 Drawbacks of Using Japan eSIM

1. Limited device compatibility

To use eSIM, you need a smartphone or tablet that supports eSIM. While newer models are becoming compatible with eSIM, older models or some mid-range to low-end devices may not support eSIM.

This means you will need to check whether your current device can use eSIM, which can be an extra step. If you need to purchase a new device to use eSIM, you also need to consider the associated costs.

2. Cannot be used on multiple devices

Traditional SIM cards can be switched between devices. Therefore, you can use one SIM card on multiple devices. However, since eSIM is embedded in the device, it is difficult to easily move it between multiple devices. Therefore, if you want to use multiple devices during your trip to Japan, it may be inconvenient.

3. Cannot use a phone number

With eSIM data plans, you may not be provided with a unique phone number or may require an additional fee. This may cause inconvenience in situations where a local phone number is required, such as making restaurant reservations or contacting hotels. Traditional SIM cards often provide a phone number along with data communication, so this is an important consideration when considering using eSIM.

3 Tips for Choosing Japan eSIM

1. Is the price affordable?

The first point to consider when choosing eSIM is the price. Expenses during a trip to Japan can include transportation, accommodation, and meals, so you would want to minimize the cost of communication. However, if you only pursue affordability, there may be issues with communication speed, data capacity, and support system. Make sure to carefully check the services provided and choose a plan that offers good cost performance.

2. Is the data capacity sufficient?

When choosing eSIM, the data capacity is an important factor. Especially if you plan to stream videos or download large amounts of data, an unlimited data plan is recommended. However, unlimited plans tend to be more expensive, so choose according to your budget for your trip to Japan.

3. Are there positive reviews?

To choose a good eSIM, check third-party reviews and feedback. This will help you judge the quality and reliability. Evaluations from users who have already used that eSIM can be very helpful in understanding the actual user experience and the support provided in case of any issues.

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How to Set Up eSIM in Japan

Before purchasing an eSIM product, please make sure that your mobile phone is compatible with eSIM.

1. Installation

1. Check the QR code displayed in the eSIM activation email.

2. Open the "Settings" on your smartphone's home screen and select "Mobile Data" (iOS) or "SIM Card Management" (Android).

3. Tap "Add Mobile Data Plan" (iOS) or "SIM Card Management" (Android), agree to install "Mobile Data" (iOS) or "SIM Card Management" (Android), and then scan the QR code displayed in the activation email to complete the installation.

2. How to Use eSIM Japan

1. After installation, turn off your traditional SIM card.

2. When using "Mobile Data" (iOS) or "SIM Card Management" (Android), the LTE icon will be displayed in the top right corner.

3. Turn on data roaming to start using the internet.

4. If you are not connected to the network after performing the above steps, toggle airplane mode on and off or restart your smartphone.

3. How to Switch Off eSIM Japan

Tap "Mobile Data" (iOS) or "SIM Card Management" (Android), and switch it to "Off" (the same steps apply for activation).

For other frequently asked questions, please refer to the link provided.

➡Precautions for eSIM

Japan eSIM is an Essential Item for a Fun Trip to Japan!

If you are planning a trip to Japan, eSIM is definitely an essential item for you. To fully enjoy Japan, constant access to the internet is necessary. From hotel reservations to using maps and searching for local recommendations, a smooth communication environment will make your trip more comfortable and fulfilling.

Trip.com's eSIM is trusted and favored by many travelers for its reliability and convenience. Why not try Trip.com's eSIM on this occasion?