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

JACOB W. | | 12-day Unlimited SIM Card | 24 June 2019
As advertised
Setup instructions were clear, and after a reboot of the phone I had no connection problems for my trip down the southeast coast. If I return I will use this company again.

ABDURRAHMAN D. | | 15-day SIM Card | 24 June 2019
I received the SIM without any problems. It was quite convenient.

THOMAS K. | | 15-day SIM Card | 24 June 2019
Neat experience & good service
Pickup at the hotel worked like a charm. There were some issues with the tunnel-heavy train route to Izu (numerous disconnects flustered my mobile device) but the support kindly pointed me to my mistakes. Altogether a great ease on the issue of navigating Tokyo quickly. :]

JULIA P. | | 30-day SIM Card | 24 June 2019
Great service!
Great service!

DANA L. | | 18-day Unlimited SIM Card | 24 June 2019
Transaction was smooth, they checked in with us to confirm the address before shipping, sim cards were waiting for us at our hotel on arrival, coverage was very good. Overall, a great experience!

  • 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.