CityZEN Mobile Plans
Enjoy Japan at Full Speed.

With Smash Mobile,

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!


The unique Japan Mobile Plan that includes 6 Months of Netflix for only ¥500 more per month than a normal CityZEN Mobile Plan!

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 et 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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