Prepaid Japan SIM Card
Unlimited Data
8 Days
Was JPY ¥5000 Now JPY ¥4000

Rated 4.20 out of 5 based on 10 customer ratings
(10 customer reviews)

¥5,000 ¥4,000

Works on Japan’s Docomo network giving you great nationwide coverage
Unlimited 4G LTE Data for 8 days
Works in any unlocked device
Start using your SIM as soon as you arrive in Japan!
Get exclusive discounts with your order!

In stock


The Prepaid Japan SIM Card gives you totally unlimited 4G LTE data in Japan for 8 days. The Japan SIM card is Nano size and comes with a Micro and Mini adapter to fit any unlocked device.

Technical Specs

Multi-size SIM (Nano, Micro and Standard)
SIM adapters and SIM ejector tool included
Data-only (no Voice or SMS)
4G LTE Data speeds
Works in any unlocked device – iPhone/iPad; Android; Windows; tablets or MiFis
Your device must support the 3G Band 1 (2100MHz) or 4G Band 1 (2100MHz) frequency
Your SIM works on the Docomo network giving you great coverage throughout Japan

Product Summary

The Japan SIM Card gives you totally unlimited 4G LTE data throughout Japan! It works on Japan’s Docomo network giving you great nationwide coverage. So, you can easily navigate Japan with maps, transport information, translation apps, travel tips – and all-important social media – so you can keep the folks back at home up to date with just how amazing Japan is! There’s no need to worry about running out of data – or needing to top-up – your data is fast and unlimited for 8 days.

Fair Usage Policy

Data is totally unlimited.  4G LTE speeds are available whenever possible.  Please note, however, that data speeds may be restricted during busy times or if large amounts of data are used.


Your Japan SIM Card is fully active upon receipt. It’s valid for 8 days from the date of first use. To start using your SIM, simply follow the instructions included in your user guide to enter your APN settings.


We’ll ship to you wherever you are in the world – totally free of charge – so you can start using your SIM as soon as you arrive in Japan!

Worldwide Shipping 5-12 business days – FREE

For shipping to the USA, your SIM will be delivered with FedEx. For shipping to the rest of the world, your SIM will be delivered with international mail.

Expedited Shipping 2-3 business days – from ¥1500

Expedited shipping is currently available to the USA, UK, Japan and the Netherlands. Different rates apply depending on delivery country. Rates calculated during checkout.

Airport Collection Options

If you would like to collect your order when you arrive in Japan, you can simply arrange to have your order sent to a Post Office located within the airport. For more information about airport collection please click here.

Please note that if you are ordering your SIM more than a few weeks in advance of your trip, we won’t ship your package immediately.  We’ll ship your SIM to you a few weeks before you travel.

Get Exclusive Discounts With Your Order!

Here at SIM Card Geek we love to reward our customers! As a thank you to all our customers we dispatch all our orders with a variety of exclusive discount coupons – we will also include them in your order confirmation email so you can waste no time in booking important services before your trip!

10 reviews for Prepaid Japan SIM Card
Unlimited Data
8 Days
Was JPY ¥5000 Now JPY ¥4000

  1. Rated 5 out of 5


    This is the best sim card for Japan!

  2. Rated 1 out of 5

    Raymond Ha

    I don’t know how someone could give this sim card a 5 star rating. This is even slower than dial up internet. Using it in Tokyo and it is horribly slow.

    • SIM Card Geek Support

      Our SIMs offer 4G LTE data where available. Speeds may sometimes be restricted due to network fair usage policies or high traffic.
      We’re very sorry to hear you have experienced problems using your SIM. Would you please confirm what kind of device (smartphone/tablet/MiFi, etc.) and the make and model of the device you are using (eg iPhone 6)?
      We’ll be glad to try and investigate the issue for you. If we are unable to fix the problem, we’ll be glad to replace or refund your service.

  3. Rated 4 out of 5


    I had a problem with the original card I ordered, the speed of the card was so slow it was unusable. Luckily after getting in touch with the support team I was sent a new card which worked liked a dream! Thank you for the top service!


      Thank you for your review, Jes! We are very sorry that your original SIM Card was slow, however, this problem has now been resolved and we even have a new supplier to prevent this from happening again. We hope you enjoyed the rest of your trip!

  4. Rated 4 out of 5


    Where to purchase at Narita airport

    • Declan

      Hi Marius,
      You need to purchase the sim online first and then arrange shipping or delivery.
      The option exists to collect at any Japan Post Office including at Narita airport.

  5. Rated 4 out of 5


    Do you have pick up point in fukuoka?

  6. Rated 4 out of 5


    Do you have oick-up point in fukouka airport?

    • Declan

      Hi Kristian- we don’t have a pick-up point per se in Fukuoka Airport but if time permits we could arrange to post your SIM to the airport post office?

  7. Rated 5 out of 5


    Do you ship directly to hostel/hotel?

    • Declan

      Hi Kristian- It depends on the product you wish to purchase. Please send additional enquiries to for a quicker
      response time! Thanks!

  8. Rated 5 out of 5


    Hi there,

    If I’m staying there for 11 days, can I pick this up my first day arriving at Haneda Airport and use it 3 days later without activating it, therefore I could still use all the 8 days until the end of my trip? The reason is that I’ve got a free sim card that I could use for 3 days. Thanks

    • Declan

      Hi Andrew,
      I am guessing you refer to the 8 days Unlimited Data SIM? If so the answer is yes- if you don’t set up the APN settings for your sim it is not active so
      simply wait until your free sim expires. Will you arrange to collect our sim at the airport post office? I hope so!

  9. Rated 5 out of 5

    Tony Dane Quetulio

    will the delivery be free if Im getting the sim at narita airport on Nov 19?

    • Declan

      Hi Tony,
      We offer a free worldwide delivery service. If you collect at the Narita airport post office then
      this is also a free service. You simply have to pay for the sim 😉

  10. Rated 5 out of 5


    Worked always and everywhere except in long Shinkansen tunnels and in a couple of places along the Narita-Tokyo line. My phone has 4G band 20 instead of 19 so I didn’t expect it operating in less urbanized areas.
    Regarding slow speed like noticed by Raymond HA. Well, slower speed periods certainly correlate with rush hours, I don’t know if Geek card receives less speed at rush hours than native Japanese cards, but it was usually better than available from hotel WiFi. I stayed in 4 different hotels during my trip. Always it was not possible to watch online video from European servers through hotel WiFi at evenings even after rush hours while Geek card had problems only during rush hours.
    Yes, speed could be better but compared to limited cards IMO it’s still 5 stars. Thanks

    • Declan

      Hi Edward- thanks for the comprehensive review. Our sims are all native Japanese cards so you should get the same service as Japanese users. The carriers won’t necessarily
      admit when the networks are a bit busy but as you say the Unlimited SIM is the best deal out there. Hope you enjoyed your trip!

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