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  6. IIJ launches simple and flexible new consumer mobile services "IIJmio Mobile Service GigaPlans"

IIJ launches simple and flexible new consumer mobile services "IIJmio Mobile Service GigaPlans"

Starting at JPY780 per month for 2GB and voice service, Offering 5 levels of data plans

February 24, 2021

TOKYO - February 24, 2021 - Internet Initiative Japan Inc. ("IIJ", TSE1: 3774), one of Japan's leading Internet access and comprehensive network solutions providers, today announced that IIJ will start offering new consumer mobile plans "IIJmio Mobile Service GigaPlans ("GigaPlans")" from April 1, 2021.

GigaPlans will offer five different data limit levels (2GB, 4GB, 8GB, 15GB and 20GB), each with a low monthly bill. GigaPlans will allow consumers to choose a line on either the NTT DoCoMo network or the au KDDI network, or even an eSIM provided over IIJ’s full-MVNO platform. Up to 10 lines can be set up per contract, and lines with GigaPlans on the same contract can share data, regardless of their specific data limits and SIM functionalities. These options give consumers the freedom to choose the line type and amount of data that fit their lifestyles, thereby cutting out unnecessary costs and offering a better value than ever.

Starting from March 1, 2021, IIJ will also hold an early sign-up campaign, for which existing IIJmio Mobile Service (Minimum Start Plan, Light Start Plan, Family Share Plan or Keitai Plan) customers with voice call contract are eligible. Customers who sign up on the dedicated web page during the campaign period and then switch to GigaPlans will receive their choice of e-GIFT valued at JPY2,000.

Overview of GigaPlans services

Date of the service offering start

April 1, 2021

Basic monthly fees

Basic monthly fees


Fees Initial fee JPY3,000
SIM issue fee
  • Type D: JPY394
  • Type A: JPY406
  • eSIM: JPY200
Universal service fee JPY3 per month
Voice call charges
  • Regular rate
    • Domestic voice calls: JPY20 for 30 seconds
    • Domestic calls between lines on the same contract: JPY16 for 30 seconds
  • When using Miofone Dial (*1)
    • Domestic voice calls: JPY10 for 30 seconds
    • International calls: JPY10 for 30 seconds
    • Domestic calls between lines on the same contract: JPY8 for 30 seconds
mio discount A discount of JPY600 per month is available when bundled with IIJmio Hikari. (*2)
Data communications(*3) Rollover data volume Unused data volume can be rolled over to the following month
Share data volume Data volume can be shared up to 10 lines (GigaPlans only)(regardless of data limits and SIM function)
Transfer data volume Data can be transferred among lines on the same contract
Switch data speeds Communication speed can be switched between high speed and low speed
GigaPlans exclusive data add-ons 1GB: JPY200(Valid only within the current month. Can be added online)
Available options
  • Flat-fee voice call option
  • Mobile options (optional services including security apps and voicemail)
  • 5G option(*4)
Available connections
  • Type D (NTT DoCoMo's LTE/3G network)
  • Type A (au's 4G LTE network)
  • IIJ's Full MVNO Service (data only eSIM)
Exclusive app Exclusive app available only to GigaPlans users
We plan to expand its functionalities to include checking data balance/usage as well as turning high-speed connection and etc.
  • (*1)Miofone Dial is IIJmio's exclusive smartphone app. Miofone Dial can be used either by calling from within the dedicated Miofone Dial app or by adding the prefix 0037691 before dialing the number.
  • (*2)Regardless of the number of GigaPlans contracts, JPY600 discount is applied to 1 IIJmio Hikari line.
  • (*3)Data speeds are reduced (to a maximum of 300 kbps) after data limits are exceeded.
  • (*4)The 5G option is available at no extra cost but cannot be used with eSIM or SMS-capable SIM cards (Type D).
  • Services described with "†" mark are to be offered from June, 2021.

GigaPlans features

Affordable plans with data limits from 2GB to 20GB

GigaPlans offer low-cost plans with a wide range of data options. Customers can save even more with additional deals, like a JPY600 discount for bundling with an IIJmio Hikari line, and even the ultra-affordable eSIM, as low as JPY400 per 2GB - only available through IIJ.

Flexible, customizable options

Customers have the freedom to combine different line types, SIM types, data limits, and more from IIJ's ample offerings to best suit their needs. This makes it possible to create better mobile environments by setting up other lines for tablets, computers, routers and other devices in addition to a main line used for a smartphone.

Get the most out of data

Unused data is rolled over to the next month, so it never goes to waste. Data can also easily be shared among up to 10 lines on the same contract. This means that data can be shared among family members and used on multiple devices, so customers can save more, based on how they use their data from month to month.

How to sign up

  • Sign up for an account on the IIJmio website.
  • Purchase an IIJmio Welcome Package at electronics stores, convenience stores, or other retail locations, and use it to sign on to the IIJmio website.
    * Beginning June 2021, we plan to have dedicated counters at retailers like Bic Camera Group and Yodobashi Camera to open and activate accounts on a same-day basis.
    * Services and terms available may vary by retailer, so please confirm directly with the retailer before purchase.

Switching to GigaPlans from an existing plan

Plans that can be switched to GigaPlans

IIJmio Mobile Service: Minimum Start Plan, Light Start Plan, Family Share Plan, Keitai Plan, Light Start Plan (eSIM beta version)

Fee to switch to GigaPlans


How to switch

through IIJmio's members website

  • *Switching can take place from April 1, 2021. The plan will be changed from the first day of the following month that switching process is completed. One cannot process the process on the last day of a month. (For example, if you take the switching process on April 1, your plan will be changed from May 1.)


IIJ will hold its IIJmio Customer-Only Early Sign-Up Campaign.

  • Early sign-up: from 10 am, Monday, March 1, 2021 to 9 pm, Wednesday, March 31, 2021
  • Switching plans: from 10 am, Thursday, April 1, 2021 to 11:59 pm, Sunday, May 30, 2021
Eligibility Customers with a current voice call-capable SIM contract for IIJmio Mobile Service at the time of entry (Minimum Start Plan, Light Start Plan, Family Share Plan or Keitai Plan)
Details Customers who sign up on the dedicated web page during the campaign period and then switch to GigaPlans by May 30, 2021 will receive their choice of an e-GIFT valued at JPY2,000.
  • *Campaign of e-Gift (value at JPY2,000) will be applied only once even in a case you make entry for more than one line.
  • *Details of this campaign will be shared on IIJmio website on March 1, 2021.

About IIJ

Founded in 1992, IIJ is one of Japan's leading Internet-access and comprehensive network solutions providers. IIJ and its group companies provide total network solutions that mainly cater to high-end corporate customers. IIJ's services include high-quality Internet connectivity services, systems integration, cloud computing services, security services and mobile services. Moreover, IIJ has built one of the largest Internet backbone networks in Japan that is connected to the United States, the United Kingdom and Asia. IIJ was listed on the First Section of the Tokyo Stock Exchange in 2006.

The statements within this release contain forward-looking statements about our future plans that involve risk and uncertainty. These statements may differ materially from actual future events or results.

For inquiries, contact

IIJ Corporate Communications

  • (*) All company names and service names used in this press release are the trademarks or registered trademarks of their respective owners.
  • (*)Prices shown do not include tax.

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