Stay Connected with an IIJmio SIM

iijmio japan travel sim

IIJmio, one of Japan’s many MVNOs, offers fast and reliable telecom services at a fraction of the price compared to traditional telecommunication companies. With its reputation as a market leader among similar SIM service providers, IIJmio is an excellent choice for both foreign residents and tourists in Japan, providing peace of mind and great value.

Why Choose IIJmio?

IIJmio stands out as a long-standing telecommunication company in Japan that offers a cost-effective SIM service for foreign residents. It has the highest rate of customer satisfaction and even boasts a collection of awards. With IIJmio, you can enjoy a fast and reliable SIM contract without being tied to a specific device, unlike the usual 2-year device/SIM contract arrangements.

The SIM packs provided by IIJmio are incredibly cheap, starting from as low as 1,600 yen per month. They offer various tiers with included minutes at reasonable rates. However, if you are an avid LINE or Skype user, you may not find these additional options strictly necessary.

Plan Overview

IIJmio offers SIM cards that operate on both the major AU and Docomo networks, ensuring competitive pricing. Apart from the one-time contract setup cost, typical monthly charges range from 1,500 to 2,500 yen. This is a significant difference compared to the regular data/voice contracts offered by major carriers, which can cost between 5,000 and 7,000 yen. By choosing IIJmio, you can save a substantial amount of money over the course of a year.

There are two types of plans available: Type A and Type D. Both are similar but differ slightly in cost for the “SIM with SMS” variant. It is important to note the device restrictions based on your existing phone and whether it was purchased through a Japanese carrier:

  • Docomo smartphones: Compatible with Type D plan
  • AU smartphones (including iPhones newer than iPhone 6 with unlocked au VoLTE support): Compatible with Type A plan
  • SIM-Free (Unlocked) smartphones: Compatible with both Type D and A plans
  • Softbank smartphones: Not compatible with either plan

How to Sign Up

Signing up for IIJmio is a straightforward process. All you need to do is visit the IIJmio website and follow the basic sign-up process. IIJmio will provide you with the necessary information on requirements, such as having your own credit card, a verifiable ID, email address, and an MNP code if you wish to migrate your current number to their service. They will also inform you about the initial ¥3,000 contract setup fee. You can also specify if you have already purchased a pack from a store.

During the sign-up process, you can choose between a SIM/device contract or a SIM-only contract (SIMのみ購入). IIJmio offers a variety of SIM options, including data-only, SNS support, and voice, along with other customizable options. You will need to provide your personal and payment information and schedule a preferred delivery date and time.

Verifying Your ID

Upon completing your registration, IIJmio will send you access details to a specific standalone ID verification website. You will need to log in and upload a copy of your ID for verification. IIJmio accepts multiple forms of ID, such as Residence Card and Driving License, in various formats, including PDF or photo data. After submitting your ID, you will receive an email confirmation once the verification process is complete. This usually takes a couple of days, but it does not affect the delivery of your SIM package.


Once your ID verification is completed, IIJmio will mail your affordable SIM package to your designated address on the specified date and time. The package includes a starter pack and explanatory materials, but most importantly, your new SIM card, ready to be inserted into your unlocked phone right away.

Getting Started

Using the IIJmio SIM is a breeze. Simply detach the SIM card from the plastic casing and insert it into the SIM tray of your phone. Once inserted, switch on your phone, and you are good to go. The settings should be automatically detected, but you can confirm them by going to Network Settings in your Android or iOS device:

  • APN:
  • Username: mio@iij
  • Password: iij
  • Authentication: PAP or CHAP

For iOS devices, you may need to download and install an official APN configuration profile provided by IIJ. You can find it on the IIJmio site.

Easy to Use

We found the IIJmio SIM to be incredibly easy to set up and use. It provides reliable speeds and excellent coverage, making it perfect for various applications. The data allowances are generous for the competitive prices, offering peace of mind in a data-heavy and app-reliant society like Japan. Throughout our tests, which included web browsing, Google Map navigation, YouTube streaming, and app installing/updating, the performance was consistently top-notch.


If you have any questions regarding IIJmio’s SIM service, you can visit their website or reach out to them in English via their official Twitter account, @IIJmio. Their customer service team is always ready to assist you.

Related Posts

© 2024 themedipia - WordPress Theme by WPEnjoy