For travelers in Japan, there are five main ways to stay connected to the Internet with a phone: pocket Wi-Fi rental, prepaid SIM cards, international roaming, cell phone rental, and free Wi-Fi spots.

Below is an overview of each option.

You can also rent a portable Wi-Fi router, which is a small device slightly smaller than your average smartphone.

There are different plans available, such as 5- and 10-day plans, so you can choose according to the length of your trip. Another plus is that you can connect to the Internet as soon as you get it: just turn on the router and enter its password into your phone.

A Wi-Fi router is a compact communication device that can easily fit in your pocket. To use, simply turn on your phone and the router, find the router's SSID displayed on your phone, and enter the provided password. In comparison to the prepaid SIMs outlined below, there is minimal need for advanced configuration, making this option highly recommended for those who prefer to avoid complicated setups, and those who just want to get online immediately upon arrival without the challenge of hunting for a connection. In addition to unlimited data plans, there are also fixed data plans available, including 5MB per day, 1 month, and 2GB.

1. Acquiring and Returning the Router:
The first point to consider when choosing a Wi-Fi router is the process of acquiring and returning it. How you receive your device varies by rental company, but in Japan, you generally have the option to collect it from the airport, your hotel, or one of the company's local offices. In addition to the rental charges, there may also be additional fees required when picking it up.

Returning your rented equipment can typically be done by depositing it into the 24-hour return post boxes usually available at the airport, or through a courier service that will deliver it to a specified address. Simply opt for the approaches that are most suitable to you and your travel itinerary.

2. Determining Data Requirements:
The second aspect to consider is determining your data requirements. Most companies offer both unlimited and fixed data plans, so you’ll want to consider how you will be using your cell phone. Will you be using map or route apps? Using Messenger, LINE, or WhatsApp for messaging? Watching videos? What about social media? You certainly don't want to use up all of your data before the end of your trip. But on the other hand, you also don’t want to pay for way more data than you’ll need or use!

As a general rule of thumb, 1 GB roughly equates to 2 hours of video, 55 hours of Wi-Fi chatting, and about 3,300 pages worth of web browsing.

3. Selecting a Carrier:
Regardless of whether you choose a Wi-Fi router or a SIM card (as we will discuss next), you will need to select a carrier. The main ones in Japan are Docomo, Softbank, KDDI, and Rakuten Mobile. Generally, all carriers offer reliable signals.

However, if you plan to use your phone in rural or mountainous areas, or visit any remote islands, Docomo is often favored for its extensive network of base stations, making it your best bet.

With these considerations in mind, you'll be well-prepared to make an informed decision about renting a Wi-Fi router in Japan. Whether you're headed to a high-tech metropolis like Tokyo or the natural wonders of Hokkaido, understanding these aspects ensures a smooth and connected journey!

Pick up your device at Narita Airport, Haneda Airport, or Kansai International Airport. To return, place the device inside a return envelope and drop it into any mailbox in Japan. The counter staff are notable for being friendly and easy to understand. On top of that, the convenience of being able to return it by post without requiring another counter visit makes it an attractive, hassle-free option!

Pickup at either Narita Airport, Haneda Airport, or Kansai International Airport. Data capacity is unlimited and it can connect to up to 5 devices at a time. To return, place into the provided envelope and deposit it in any mailbox in Japan.

Delivery can be arranged to your hotel, amongst other locations within Japan. To return, place into the enclosed envelope and drop it into a mailbox within Japan. Up to 5 devices can be connected at a time.

A SIM card is an IC card that is necessary to make calls and access the Internet. Prepaid SIM cards come equipped with a predetermined max data capacity and usage period. To install, remove the SIM tray from your device with a safety pin and insert the card.

Recently, eSIMs have also become an option. These cards are pre-embedded into the phone itself, and can be acquired online.

SIM cards are designed to be inserted into a SIM-free smartphone, with the amount of data and period of use already set. If you have a phone that is compatible with these SIM cards, you can buy and use one immediately upon arrival. Simply insert it into your device and set the APN (Access Point Name) to allow your phone to connect to the Internet. With no need to carry an extra device or worry about charging, this option is especially recommended for those who prioritize mobility and frequently use the Internet while on the go.

Alternatively, the eSIM comes pre-installed in the phone itself, eliminating the need to manually replace the card, and enabling immediate use after completing a quick online process. In addition, if you plan to travel to any other countries during you trip, you won’t need to rent a new prepaid SIM in each country, as the entire process can be completed online!

If you're uncertain about the SIM card setup process, it’s a good idea to opt for a company that offers in-person assistance when you pick it up who can make sure that it’s properly installed and functional. In the event that it proves not to work while testing it at the counter, most companies will allow you to cancel your order right there.

As with Wi-Fi routers, you will usually be able to specify where in Japan you’d like to pick up your card, such as the airport or your hotel. Also, as they are disposable, there is no need to return them.

1. Choosing the Right Data Capacity
The first consideration is, similar to the Wi-Fi router, you should carefully select an appropriate data capacity. If you exceed the limit, you may encounter reduced speeds or even loss of service. Knowing your needs will help you keep connected while exploring vibrant Tokyo or the peaceful countryside of Sado Island.

2. Ensuring Phone Compatibility
Second, make sure that your phone is compatible with the Japanese carrier network after your card is inserted, as there may be cases where inquiries, cancellations, and refunds may not be available. If you have concerns about the setup process, go for a product that can be explained by the staff during purchase.

3. SIM or eSIM?
What is eSIM? eSIM, or embedded SIM, is a digital SIM that allows you to activate a cellular plan without having to use a physical SIM card. With eSIM, activation is done digitally, allowing you to switch between carriers or plans with just a few taps on your device. It's an increasingly popular option for modern travelers and offers a unique set of benefits and considerations. While eSIM is gaining traction, not all phones are compatible with eSIMs and you will want to check compatibility before you make a purchase.

4. Understanding SIM Card Insertion and Configuration
Third, familiarize yourself with how to insert the SIM card and configure the APN settings for immediate use upon arrival. Typically, after powering off your phone, you'll have to open the SIM tray using a paperclip or a similar tool, and insert the SIM card. Next, after turning your phone back on, set up the APN as per your provided instructions.

The SIM card is made of delicate components, including an IC chip, so be sure to avoid direct contact with the chip when handling. If your phone fails to start up even after inserting the card and configuring the APN, restart your device, toggle the airplane mode on and off, or try reinserting the card.

Pick up at Haneda Airport, New Chitose Airport, Chubu Centrair International Airport, Kansai International Airport, or Fukuoka Airport. While this option offers unlimited data capacity, it is limited to data only. Options include 5, 8, 12, and 16 day plans, and airport staff will assist you in setting up your SIM card according to the provided manual. In the event of defective items, a replacement will be provided.

Pick up at either a Tokyo (Narita or Haneda) or Osaka (Kansai International) airport. While this option offers unlimited data capacity, it is limited to data only. In the event that it doesn't work at the pickup counter, cancellation is available.

Complete the reservation process online. You should receive an e-mail within 24 hours with specific instructions on how to use the service. Once the settings have been configured according to the instructions, you can begin using it right away. Users have expressed satisfaction with this choice for its convenience, as well as their prompt and responsive Help Center.

When you land in Japan, your trusty cell phone from home might still be your travel companion, thanks to international roaming.

How does it work? Imagine your phone chatting away with the local cellular base stations and exchange stations, all coordinated by your contract carrier back home. That's international roaming for you, a gateway that opens the lines of communication right in the heart of Japan!

But hold on! International roaming can be a bit tricky. First and foremost, you need a contract with a wireless carrier, and that's where the landscape varies.

Fees, availability, even those tempting offers of unlimited service without extra costs – they differ by your home country.

Some travelers luck out with fantastic plans; others might find certain services blocked, depending on local conditions and their device model.

So what's the traveler's mantra? Research, research, research! Check your carrier's offerings well before your departure, and you'll find your path to seamless communication while exploring the Land of the Rising Sun.

Travelers also have the option to rent a cell phone for use within Japan from inside the airport immediately upon arrival. For the most part, you can expect charges to apply for calls and data usage, in addition to the rental fee for the device.

As one example, SoftBank Global will charge you 550 yen per day for the device rental, up to 990 yen per day for data charges, and about 110 yen per minute for calls.

You'll also find free Wi-Fi spots available in a number of public places, including airports, train stations, hotels, convenience stores, and cafes. However, if the Wi-Fi is not encrypted, it can pose a security concern as you may be exposed to unauthorized surveillance or data access.

On that note, let us move on to the purpose of this article: a beginner-friendly guide to everything you should know about Wi-Fi routers and prepaid SIM cards when traveling to Japan.

And there you have it: our recommendations for pocket Wi-Fi routers and prepaid SIM cards to help you get (and stay) connected during your trip to Japan.

For a comprehensive understanding of the pros and cons of each, as well as help selecting the right one for your needs, we hope you will have to look no further than this article!

*Information in article as of July 2023. Please see official websites for the latest updates and information.

*Reference prices listed in this article are as of August 2023 and may not represent the actual price at the time of booking.

English translation by: Krys Suzuki