SIM Cards

Stay connected with our Unlimited-data SIM Cards

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  • Choose from flexible short-term plans to economical long-term plans.
    Enjoy the best value depending on how long you're travelling.
  • Truly unlimited High-speed LTE data.
    With download speeds up to 150 Mbps [?]
  • Runs on Japan's well-known Docomo network
    Powerful network with excellent coverage throughout Japan
  • No return necessary
    Once you’re done with the card, just throw it away, or keep it as a memory of your amazing time in Japan :)
Free Shipping
Airport pickup / Hotel delivery available
Simple Setup - No activation.
Install and go!
Unlimited blue
Unlimited data.
No Cutoff!
Price blue
More affordable prices compared to the competition
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24/7 Native English Support helpline

Unlimited SIM Cards for power users.

Unlimited LTE data that lets you to stream HD video, cloud-sync all your photos, video call loved ones are more.
Conveniently available in blocks of 6-days to offer the best bang for your buck no matter how long your trip is.

Subject to Docomo’s “Fair Use Policy” - See Terms of Service for more info.

Sim six
$ 46
Sim twelve
$ 60
Sim eighteen
$ 75
Sim twenty four
$ 87
Sim thirty
$ 98

Set-data SIM Cards for light users.

Ideal for users with minimal data needs who just need to stay connected on the go.
Fallback to 3G speeds after exhausting LTE quota.

$ 20

2GB total LTE allowance

$ 48

4GB total LTE allowance

$ 59

8GB total LTE allowance

Reviews for JapanWifiBuddy SIM Cards

28 reviews
5 25
4 1
3 2
2 0
1 0

Mark R. | | 15-day SIM Card | 28 June 2019
Worked as advertised. Easy to
Worked as advertised. Easy to pickup at airport post office.

SIN P. | | 15-day SIM Card | 26 June 2019
Convenient and Easy
It has clear instruction on where

DEAN D. | | 12-day Unlimited SIM Card | 26 June 2019
Great experience
The package was ready for pickup exactly where it was supposed to be at Narita. The SIM card worked great in my unlocked Galaxy S9+ in both the greater Tokyo area, and Sendai. Two 6-day cards were provided rather than a single 12-day card, and I had to change after 6 days - if I had not read the materials provided carefully, I might have missed that and had a problem.

GERRELL M. | | 6-day Unlimited SIM Card | 26 June 2019
Very helpful for navigation and
Very helpful for navigation and had strong signal everywhere I went

GIORGIO S. | | 15-day SIM Card | 25 June 2019
Smooth delivery and great coverage
Booking process and delivery to hotel were very smooth and we had great coverage in all places we went, including some quite remote villages. Highly recommended

  • Requires a SIM Unlocked device. If your device is locked, please contact your carrier to unlock it.
  • We include thorough instructions, but swapping SIM cards requires some knowledge on your specific device, including access to optional tools that might be needed. Please look into setup for your specific device before leaving home for Japan.
  • Each card is available in nano size, making it compatible with almost all recent tablet and smart phone models. Please ensure your device supports this format or optionally purchase an adapter from us.
  • LTE/3G bands used:
    LTE: 2100MHz/1700MHz/1500MHz/800MHz
    WCDMA/HSDPA/HSUPA: 2100MHz/1700MHz/800MHz
  • These are data-only SIM Cards. Carrier-based voice calls and text messaging are NOT supported. However, data-based messaging and telephony solutions such as Skype, Facetime, Whatsapp, Line etc. are supported.
Got a question? Check out our FAQ.

Not answered there? Shoot us an email and we'll get back to you soon!
Please ensure that your device is compatible with our SIM cards.

JapanWifiBuddy is not responsible if your device has compatibility issues with our SIM Cards.

If you have doubts, please consider renting our Pocket Wifi devices instead, which support all Wifi-enabled devices.