CityZEN Mobile Plans
Enjoy Japan at Full Speed.

Smash Mobile, it's


Fast and Reliable 4G/LTE

All over Japan with NTT Docomo, Japan's most famous network.

Dedicated Support

Support provided in English and French able to help with technical issues.

Free Delivery

Delivered in just a few days in Japan.
International available as well.

Monthly Payments

Easy and Clear Payments.
International Cards accepted!

Get Started by choosing between
Data Only or Data & Voice

Hotspot/Tethering enabled

Hotspot and tethering are enabled on all our Japan mobile plans. Don't hesitate to share!

Works with most SIM-unlocked devices!

Save money by not having to purchase a brand new phone in Japan. List of compatible devices.

Easy Cancellation

Give us the date of your departure and pay only for the days that you've used your long-term SIM!

Easy to Switch Data Amount

If you realize that you need more or less data, just contact us to switch plan for free!


Brand new bundle deal that includes 6 Months of Netflix for only ¥500 more per month than a normal subscription!

attention! We will ask for a picture of your Passport or Residence Card at Sign Up for all Mobile Plans.
For Military Personnel, a copy of your Military ID.


Does your Long Term SIM work if my phone is SIM locked ?

Your phone must be sim unlocked in order to support our Mobile Plan SIM. If your phone is sim-locked, you can use our Pocket Wifi AGILITY.
Understand that we, Smash Mobile, do not have the ability to unlock your phone. So please check carefully.

Do you ship abroad ?

Yes, we ship our long term SIM to France, Australia, Canada, UK, USA, Netherlands, Belgium, Switzerland and US Military bases.

What SIM sizes are available ?

All our Japan Mobile Plans SIM are multi-size. Standard, Micro and Nano all in ONE.

Can I pay with foreign credit cards ?

Yes, we are proud users of Stripe, so your card is accepted and your information always safe.

Should I return the product when I leave ?

No, Long Term SIM for Japan do not have to be returned.

What is an APN ?

APN (Access Point Name) is a special profile set up for telecommunication providers.APN are most of the time pre-set to your phone by your wireless service provider. You need to change these values to ours in order to get smashed by data !

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