eSIM vs Pocket WiFi: Which to Use on a Japan Trip? Pros and Cons in Comparison

Pocket WiFi and eSIM for Traveling in Japan

Photo by Pixta

When traveling to Japan, the current popular options for internet access are eSIM and Pocket WiFi.

However, eSIM and Pocket WiFi each have different characteristics. You might find yourself confused about which one to use.

Based on my experience of using multiple types of both eSIMs and Pocket WiFi, we will share which is best for you depending on your needs.

Pcket WiFi versus eSIM: A Guide

1. Pocket WiFi and eSIM for Traveling in Japan
2. Who Should Consider Using Pocket WiFi or eSIM?
3. Advantages and Disadvantages of Pocket WiFi
4. Advantages and Disadvantages of eSIM
5. Conclusion
6. Great Discounts for Pocket WiFi/eSIM

Who Should Consider Using Pocket WiFi or eSIM?

Photo by Pixta

First, let's summarize who eSIMs and Pocket WiFi are suited for.

We Recommend Pocket WiFi for

- Those who want to use a large amount of data.
- Those who want to tether to a computer or gaming console.
- Those who prefer not to deal with complicated settings.

We Recommend eSIM for

- Those who want to keep costs low.
- Those who want the convenience of portability.
- Those who do not mind APN settings.

Next, we will explain the advantages and disadvantages of each in detail.

Advantages and Disadvantages of Pocket WiFi

First, we have summarized the features of Pocket WiFi in a table.

Comparison Item	Features
Communication	- Large amount of data available - Easy to connect for multiple users - Good battery life
Cost	Fewer low-capacity, low-cost plans compared to eSIM
Order and Pickup Effort	Application must be made 1 to 2 days in advance. Requires picking up the router at the airport or hotel.
Ease of Activation	Can be used by simply connecting a computer or smartphone to the WiFi and entering the password
Portability	- Carrying the router can be cumbersome - Costs may be incurred in cases of damage or loss (insurance available)

What is Pocket WiFi?

Japan Wireless (left) and NINJA WiFi routers

Pocket WiFi refers to devices that serve as WiFi hotspots, as shown in the photo above.

Typically, they are provided in a pouch. Common pickup locations include airports and hotels.

Author's Experience

I have used Pocket WiFi during my travels in Japan and Hong Kong.

When I used it in Japan, I was moving around various places in Tokyo for work, and the Pocket WiFi was extremely convenient.

At that time, I was using an old smartphone. However, with Pocket WiFi, I didn’t need to tether, which helped preserve the battery life of my smartphone, allowing me to work on my computer for extended periods. This was really beneficial.

Additionally, in recent years, the routers have become more compact. The pouch containing the Pocket WiFi set easily fit in the corner of my backpack, making it convenient to carry around.

However, one drawback I felt was that Pocket WiFi requires compensation in the event of damage or loss (there's paid insurance available). I have never encountered such a situation, but I was careful when carrying it around.

Advantages and Disadvantages of eSIM

Next, let's take a look at the advantages and disadvantages of eSIMs.

Comparison Item	Features
Communication	- There may be limitations on tethering. - Tethering can drain the smartphone battery more quickly.
Cost	Many low-capacity, low-cost plans compared to Pocket WiFi.
Order and Pickup Effort	Completely online; can use immediately after ordering.
Ease of Activation	APN settings may be required. More issues may arise compared to Pocket WiFi.
Portability	Easy to carry as it's just your own smartphone.

What is eSIM?

eSIM stands for Embedded SIM.

With traditional SIM cards, it was necessary to remove the card from the device's slot to swap it out. However, with eSIM, it can be used simply by making changes through the smartphone settings, and purchasing and receiving it can also be done entirely online.

eSIM is a new service, and products aimed at travelers to Japan have been rapidly increasing since around 2024.

Author's Experience

I have used eSIM in both Japan and South Korea.

Since everything is handled through a single smartphone, it is very easy to carry around. It feels just like using your smartphone in your home country, making it incredibly convenient. (In particular, when I used World eSIM in South Korea, I was impressed by the smoothness of the connection.)

However, there is one pitfall with eSIM. In fact, I applied for eSIM during a trip to Taiwan, but for some reason, I was unable to activate it successfully.

The services I used at that time were World eSIM and Saily. Even after contacting customer support and adjusting APN settings for both, I could not resolve the issue until the end (looking back, the smartphone model I was using may have had some issues due to being outdated).

Given that such situations can occur, those who are concerned might find it safer to choose Pocket WiFi.

Additionally, while I have tried multiple Pocket WiFi and eSIM options, I generally feel that Pocket WiFi often provides smoother connectivity.

Conclusion

After comparing from various perspectives, I believe that:

- If you want a light and convenient sightseeing experience, go for eSIM.
- If you plan to use a computer or gaming devices extensively during your stay in Japan, or if you have concerns about connectivity, choose Pocket WiFi.

This way, you can make the best choice for your needs!

Great Discounts on Pocket WiFi/eSIM

MATCHA introduces recommended services and great discounts for both eSIM and Pocket WiFi. Be sure to check them out.

MATCHA Discounts for Pocket WiFi

NINJA WiFi: Up to 35% Off
A popular service that offers large data options ranging from 1 to 10GB at some of the lowest prices in Japan. Click the link below, and the discount will be automatically applied.

Japan Wireless: 20% Off
A popular service that offers two types of unlimited plans. Click the link below, and the discount will be automatically applied.

MATCHA Discounts for eSIM

World eSIM: 15% Off
With excellent communication speeds! Enjoy a range of plans from Unlimited Data Plans to Daily Data Plans and Fixed Data Plans at great prices. Click the link below, and the discount will be automatically applied.

NINJA eSIM: 30% Off
A user-friendly eSIM that allows you to check your remaining data balance on the user screen. Click the link below, and the discount will be automatically applied.

Airalo
This is a service with worldwide popularity.
- First-time users: "MATCHA15" for 15% off
- Repeat users: "MATCHA10" for 10% off