Japan SIM Cards: Everything You Need To Know | 2022

Are you visiting Japan soon? When buying, be careful what to expect Japanese SIM card.

Fortunately, Asia is one of the best places where you can easily buy a SIM card. You should be able to find a cheap SIM card pretty much anywhere in Asia. In fact, most data packages are affordable, which makes things easier!

In this guide we explain where to buy a SIM card in Japan in person and online. We will also talk about prepaid SIM cards and eSIMs if your mobile phone supports them.

Before reading this guide, you might be wondering if you actually need a SIM card in Japan. If you don’t mind not having internet, you can probably find free WiFi in restaurants, malls, and hotels.

However, if you need data to get around, hail a taxi, or translate Japanese, you might want to get a SIM card for your travels in Japan.

Mount Fuji, Japan

Best SIM cards in Japan

When traveling in Japan, we recommend using a Mobal, SoftBank, B-Mobile or Airalo SIM card. (I’ll come back to Airalo later, so read on to find out more!)

However, if you plan to visit other countries during your trip to Asia, you should make sure you select an option that offers coverage in other Asian countries.

How to buy a SIM card in Japan

You can buy a Japanese prepaid SIM card either in person at some international airports, at mobile operator shops, at convenience stores, or online.

Normally you have to expect higher costs and lower data offers at the airport, so we do not recommend buying a SIM card at the airport. However, you won’t necessarily find SIM card shops at every airport, so it’s important to keep that in mind. And when you see a deal, you may also have limited options.


Are you planning your upcoming adventures? To go by bus! (It s cheap!)


For this reason, I recommend buying a SIM card directly from the mobile operator’s shop. Note that you may need your passport to purchase one.

However, this means that you will not receive data directly upon arrival. So if you prefer to be connected at all times, you can use an eSIM or buy an Asian prepaid SIM card online.

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Now let’s take a look at the data plans offered by Mobal, SoftBank and B-Mobile.

Tokyo, Japan

Mobile SIM cards

Mobal offers different tourist plans:

  • Unlimited data valid for 8 days for 3,990 JPY ($26.62)
  • Unlimited data valid for 16 days for 5,990 JPY ($39.96)
  • Unlimited data valid for 31 days for 7,490 JPY ($49.07)
  • Unlimited data valid for 30 days for 7,500 JPY ($50.04)
  • Unlimited data valid for 60 days for 12,000 JPY ($80.06)
  • Unlimited data valid for 90 days for 16,500 JPY ($110.08)

SoftBank SIM cards

Softbank offers a prepaid SIM for travelers that includes:

  • 3 GB of data valid for 31 days for 1,650 JPY ($11.01)

B-mobile SIM cards

B-Mobile offers two SIM-only plans for tourists:

  • 5GB, 10 days, 1,980 JPY
  • 7GB, 21 days, 2,970 JPY

Overall, we think Mobal is the best option if you want to buy your SIM card in person. That said, if you can’t find their store, anyone would!

How to buy a Japanese prepaid SIM card online

If you want your SIM card ready when you arrive, you can buy it online or from sites like Amazon.

You can find different plans on Amazon. For example, the prepaid Asia-Pacific SIM card works in more than 17 countries and gives you 14 days of unlimited data. Japan is one of them.

But there are many other options worth considering, so shop around and make sure the countries you want to visit are listed.

Another option is to buy an Asian prepaid SIM card from Simify. This works if you live in the United States or Australia. They currently offer 3 different packages covering Japan:

  • 6GB valid for 12 days for $25 – works in 13 countries
  • 6GB valid for 15 days for $40 – works in 18 countries
  • 10GB valid for 30 days for $29 – works in 13 countries

Finally, the final option is to buy an eSIM card for Japan or, if you are traveling to multiple countries, an eSIM plan for Asia.

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How to buy an eSIM card for Japan

eSIM is a new concept that allows you to have a virtual SIM card in your phone. If your cell phone supports eSIM cards, this is definitely one of the best options to get data in Japan.

Curious? Learn more about eSIMs for travelers at eSIM Roamers.

I started using eSIM as soon as my phone supported it. And I tried it for the first time when I was visiting family in Canada. To buy eSIMs I usually use Airalo. Read on to learn more about the best eSIMs for Japan.

Airalo Japan

If you want to buy an eSIM for Japan, you can get one from Airalo. This website offers many eSIM cards worldwide and special plans for Asia and Japan. I’ve been using Airalo for several months and it works well.

Here are the available options:

  • Moshi Moshi: 1GB valid for 7 days for $6
  • Moshi Moshi: 3GB valid for 30 days for $14

Japan Airalo eSIM plans

Here is an overview of the available options for Asia:

  • 1GB valid for 7 days for $5
  • 3GB valid for 30 days for $13
  • 5GB valid for 30 days for $20
  • 10GB valid for 30 days for $37
  • 50GB valid for 90 days for $100
  • 100GB valid for 180 days for $185

The options above are part of Asialink and offer coverage in 14 countries including Japan.

Alternatively, if you’re traveling to other countries not on the list, you can try Discover Global, which offers coverage in 87 countries, including Japan.

Here is an overview of the options available on Discover Global:

  • 1GB valid for 7 days for $9
  • 3GB valid for 15 days for $24
  • 5GB valid for 30 days for $35
  • 10GB valid for 60 days for $59
  • 20GB valid for 180 days for $89

One important thing to note about Airalo is that you need to look out for the provider in each country. Suppose you ever have trouble connecting to the internet during your travels. In this case, it may be because you’re automatically connecting to networks and need to manually select a network instead.

When you buy the eSIM, you get access to the list of networks supported in each country.

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Holafly Japan

Alternatively, you can look at your options on Holafly. You can read our Holafly review to know more about this eSIM shop.

Here is an overview of their plans for Japan:

  • Unlimited data valid for 5 days for $19
  • Unlimited data valid for 10 days for $34
  • Unlimited data valid for 15 days for $47
  • Unlimited data valid for 20 days for $54
  • Unlimited data valid for 30 days for $64
  • Unlimited data valid for 60 days for $84
  • Unlimited data valid for 90 days for $99

Their Asia eSIM works in 12 countries (including Japan) and they offer the following plan:

  • 8GB of data for 30 days for $47

Nomad Japan

Finally, Nomad is also a great eSIM provider. Here is an overview of the plans available for Japan:

  • 1GB valid for 7 days for $6
  • 3GB valid for 30 days for $15
  • 5GB valid for 30 days for $17
  • 10 GB valid for 30 days for $50
  • 20GB valid for 30 days for $69

Nomad also has APAC, an eSIM plan for Asia. This plan provides coverage in Japan. Here is an overview:

  • 1GB valid for 7 days for $6
  • 3GB valid for 30 days for $15
  • 5GB valid for 30 days for $17
  • 10 GB valid for 30 days for $50
  • 20GB valid for 30 days for $69

Final thoughts on SIM cards in Japan

As you can see, getting a prepaid SIM card in Japan or even an eSIM for your travels in Japan is pretty easy. You can even stay connected anywhere in Asia without having to change your SIM card, especially if you purchase an Asia plan.

I believe the eSIM card is the most convenient way to get data in Japan if you want data on arrival. This way you don’t have to go to a store to buy a SIM card. Of course, you must first ensure that your mobile phone supports eSIM.

Are you traveling to Japan soon? Read one of the following blog posts:

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