Moshi Moshi offers low-cost eSIMs for visitors to Japan. Plans start from US$4.50 (~¥680) and give you 4G coverage from KDDI & Softbank.

If you're planning a trip to Japan, one of the easiest ways to use your cellphone whilst you're there is with a Moshi Moshi eSIM. Named after the telephone greeting that is said in Japan (もしもし), Moshi Moshi offers a low-cost allowance of 4G data in Japan.

You can get a Moshi Moshi eSIM from US$4.50 (approximately ¥680) at Airalo. This will allow you to use your cellphone in Japan for up to 7 days. The Moshi Moshi eSIM is available on a pre-paid basis for visitors to Japan and gives you an allowance of 4G mobile data to use whilst you're there.

In this article, we'll look at the Moshi Moshi service in Japan, including how you're able to get it and the best Moshi Moshi eSIM deals. We'll also look at the coverage available on a Moshi Moshi eSIM, and the other ways of using your mobile phone in Japan (e.g. through international roaming).

Plans From: US$4.50 (~¥680) for 7 days
Best Deals:
Compatible Devices:
  • Apple iPhone 11 and newer
  • Samsung Galaxy S20 and newer
  • Google Pixel 3 and newer
  • see more...
Coverage: 4G coverage (KDDI & Softbank)
Voucher Code:
  • Save 10% on all Moshi Moshi eSIMs using KEN10 (new customers only)
  • Save 5% using the KEN5 voucher code (existing Airalo customers)

Moshi Moshi Plans

If you're looking for an affordable way to use your cellphone when travelling in Japan, you can get a Moshi Moshi eSIM from only US$4.50 (approximately ¥680) for 7 days usage.

To get a Moshi Moshi eSIM, you'll need to have an eSIM-compatible device such as the iPhone 11, Galaxy S20, Pixel 3 or later devices. You can then order your Moshi Moshi eSIM through the Airalo app with instant delivery direct to your phone. There's no need to queue at the airport or to register the Moshi Moshi eSIM with your ID, saving you lots of time.

The following table shows the eSIM plans that are currently available from Moshi Moshi in Japan:

NetworkMinutesTextsDataPlan
Cost
AiraloNoneNone1GBUS$4.50
(~¥680)
valid for 7 days
AiraloNoneNone2GBUS$6.50
(~¥980)
valid for 15 days
AiraloNoneNone3GBUS$8.50
(~¥1,280)
valid for 30 days
AiraloNoneNone10GBUS$9.00
(~¥1,350)
valid for 30 days
AiraloNoneNone5GBUS$11.50
(~¥1,730)
valid for 30 days
AiraloNoneNone20GBUS$26.00
(~¥3,900)
valid for 30 days

As a special offer for February 2024, you can get a 10% discount on all Moshi Moshi eSIMs. Simply enter the KEN10 voucher code at checkout. This offer is only available if you're new to Airalo.

If you've already used an Airalo eSIM in the past, you can use the KEN5 voucher code to get a 5% discount on your plan.

See all Moshi Moshi eSIM deals →

Once you've ordered your Moshi Moshi eSIM, it will only activate when your cellphone actually connects to a supported network in Japan. This means the validity period will only begin when you actually land in Japan and turn your cellphone on.

Your Moshi Moshi eSIM works with the dual-SIM function on most modern smartphones. This means you can use your regular SIM card alongside the Moshi Moshi eSIM (e.g. to receive incoming phone calls and text messages on your normal phone number).

Alternatives to Moshi Moshi

The main disadvantage of Moshi Moshi is the fact you're getting a data-only service on the eSIM. You will not get a local phone number in Japan when you're using the Moshi Moshi eSIM in your phone.

If you'd like to call or text whilst you're travelling in Japan, you'll need to use your normal SIM card instead (on which international roaming fees may apply). Alternatively, you can side-step these charges by making your calls through WhatsApp or other similar apps.

If you're looking for a more fully featured SIM card with a local phone number in Japan (starting with +81), you could consider getting a regular prepaid SIM card upon arrival instead. This will involve some additional hassle (e.g. queuing up at the airport to get your SIM card, a registration process for the SIM card, etc) but it can be preferable and better suited for longer-term use in Japan.

Moshi Moshi Coverage

If you're using a Moshi Moshi eSIM, you'll have access to 4G mobile coverage in Japan. This is provided by the following partner networks:

Coverage ProviderNetwork TypeCoverage Area
KDDI4G LTEJapan
Softbank4G LTEJapan

There's no international roaming available on a Moshi Moshi eSIM. Therefore, you won't be able to use it outside of Japan. If you're planning to visit multiple countries on your trip, you may need to get a separate eSIM for the other countries you visit.

Other Airalo eSIMs

Airalo's Moshi Moshi eSIM can only be used in Japan.

If you're planning to visit multiple countries on your trip, you could consider getting a or Asialink or Discover eSIM. These eSIM plans will work in Japan, as well as a number of other countries.

eSIM

Airalo's eSIM will also work in Japan, giving you 4G coverage from KDDI & Softbank. In addition, you'll be able to use it in . The plans start from :

NetworkMinutesTextsDataPlan
Cost
No price plans could be found matching this criteria.

Asialink eSIM

Airalo's Asialink eSIM will also work in Japan, giving you 4G coverage from KDDI. In addition, you'll be able to use it in 17 other countries. The Asialink plans start from US$5 for 1GB of data:

NetworkMinutesTextsDataPlan
Cost
AsialinkNoneNone1GBUS$5.00
valid for 7 days
AsialinkNoneNone3GBUS$13.00
valid for 30 days
AsialinkNoneNone5GBUS$20.00
valid for 30 days
AsialinkNoneNone10GBUS$37.00
valid for 30 days
AsialinkNoneNone50GBUS$100.00
valid for 90 days
AsialinkNoneNone100GBUS$185.00
valid for 180 days

Discover eSIM

Airalo's Discover eSIM will also work in Japan, giving you 4G & 5G coverage from DOCOMO, SoftBank & KDDI. In addition, you'll be able to use it in 125 other countries. The Discover plans start from US$9 for 1GB of data:

NetworkMinutesTextsDataPlan
Cost
DiscoverNoneNone1GBUS$9.00
valid for 7 days
DiscoverNoneNone2GBUS$17.00
valid for 15 days
DiscoverNoneNone3GBUS$24.00
valid for 30 days
DiscoverNoneNone5GBUS$35.00
valid for 60 days
DiscoverNoneNone10GBUS$59.00
valid for 180 days
DiscoverNoneNone20GBUS$69.00
valid for 365 days

Discover+ eSIM

The Discover+ eSIM works in a very similar way to the Discover eSIM, also allowing you to use your mobile phone in Japan. However, it adds the ability for you to make and recieve phone calls and SMS text messages on your eSIM. You'll be assigned a +43 phone number (based in Austria) to use for calling and texting.

The Discover+ plans currently start from US$15 for 10 minutes, 10 texts and 1GB of data:

NetworkMinutesTextsDataPlan
Cost
Discover+10101GBUS$15.00
valid for 7 days
Discover+20202GBUS$27.00
valid for 15 days
Discover+30303GBUS$36.00
valid for 30 days
Discover+50505GBUS$50.00
valid for 60 days
Discover+10010010GBUS$79.00
valid for 180 days
Discover+20020020GBUS$89.00
valid for 365 days

Other Country Specific eSIMs

You can also buy other country-specific eSIMs from Airalo, including the following:

For more information, read our Airalo review.

More Information

For more information about Moshi Moshi, please see the Airalo website.

Your Comments 4 so far

We'd love to hear your thoughts and any questions you may have. So far, we've received 4 comments from readers. You can add your own comment here.

  • Hi Ken
    Love this site!
    I’m off to South Africa in Feb 24 and I have a EE contract, they however do not cover that Country in their Data Roaming, what is the best way I can use my phone over there please?
    Get a sim when I land or do you know any other deals
    Thanks
    Richard

  • I just arrived in the USA and Airalo is amazing – I bought the the sim on the airport wifi, and had it fully set up and on the network before I got to LAX baggage claim! So easy, no paperwork, didn’t need to find a shop/kiosk, queue, open up the phone or any of that nonsense. Also with dual sim capability I’m still able to use my British number for receiving sms/iMessage.

    It’s good coverage too, and it automatically swaps between AT&T or T-Mobile depending on the area. I’d highly recommend it and look forward to using it in other places in the future.

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