[eSIM Available] GTN Prepaid Data SIM – Flexible Plans for Everyone!

• Table of Contents
• What is GTN Mobile?
• Store-Exclusive Plans Now Available Online!
• GTN Prepaid Data SIM Specifications
• How to Choose the Right Plan
• How to Purchase
• List of Stores
• Notes

What is GTN Mobile?

GTN Mobile is a mobile service designed for foreigners in Japan. It provides a wide range of plans and reliable support for both short-term visitors and long-term residents. In this article, we introduce GTN Prepaid Data SIM, a data-only plan tailored for seamless connectivity.

Store-Exclusive Plans Now Available Online!

Physical SIM and eSIM!

On the official website, you can purchase a physical SIM card or choose eSIM for any of the four data plans. If you have an eSIM-compatible smartphone, you can apply and purchase 24/7 online. Once your payment is complete, you’ll receive a notification email with your eSIM details right away.

GTN Prepaid Data SIM Specifications

Plan :
Physical SIM/eSIM compatible
30GB/ 7 days sales price: 3,000 yen
10GB/ 30 days sales price: 3,000 yen
50GB/ 30 days sales price: 5,000 yen
135GB/ 90 days sales price: 10,000 yen

・Available areas: NTT Docomo LTE/3G areas throughout Japan
(Check the available areas here .)
・Maximum communication speed: 4G/LTE (Download: up to 788Mbps / Upload: up to 50Mbps)
・Voice calls/SMS: Not available
・International roaming: Not supported
・Tethering functionality may vary depending on your device. There are no restrictions on tethering use.

*All prices include tax.
*This product can only be used in Japan and cannot be used overseas.

How to Choose the Right Plan

Your ideal plan can generally be determined based on how long you’ll need it. However, many customers ask, "How much data do I actually need?"
The answer depends on your personal usage habits, making it difficult to set a clear standard. To help, here are some general reference points:

What Can You Do with 1GB of Data?

When using Wi-Fi, you might not think about how much data you're consuming.
But when relying on mobile data, it’s good to know how far 1GB can take you:
LINE calls: 55 hours (approx. 300KB per minute)
Music streaming: 250 songs (4-minute songs at ~4MB each)
Video streaming: About 2 hours (standard quality, 480p)
Google Maps:
-Normal mode: ~5–10MB per hour
-Navigation mode (real-time): ~30–50MB per hour
Photo uploads/downloads: 3–10MB per image (depending on quality)
-At 3MB per image, 1GB allows for 330–340 photos

Examples of How Each Plan is Used

30GB/ 7 days
- Popular among those staying in Japan for about a week (travel, temporary return home, etc.).
10GB/ 30 days
- Frequently chosen by those with low data usage.
 - A good option for those who have suddenly run out of data or need temporary mobile data.
50GB/ 30 days
- Often used by those traveling in Japan for about a month.
- Common among those waiting for home internet installation and temporarily without Wi-Fi.
135GB/ 90 days 
- A popular choice for those staying in Japan for over a month.
- Frequently purchased by international students who need a large amount of data.

We hope this information helps you find the right plan for your needs!

How to Purchase

There are two ways to purchase a GTN Prepaid DATA SIM: online or in-store .

In-Store Purchase

We recommend purchasing in-store if:
- You’re unsure whether your phone is compatible.
- You have trouble with internet or device settings.
- You prefer to buy a physical SIM card.
To reduce waiting time, we recommend filling out the application online in advance.
If you're unsure about the application process, feel free to visit the store directly—our GTN Mobile staff will assist you from application to SIM card setup.

Online Purchase

If you would like to use an eSIM, please enter the required information on the GTN Mobile application page and pay by credit card. We will send you detailed information about the eSIM to your registered email address.
There's no need to visit our store.
*A credit card is required for payment.
*The activation procedure takes approximately 15 minutes.

Click here for GTN Mobile Prepaid SIM online application and purchase!

↓ Need a Short-Term Phone Number? Check Below! ↓

List of Stores

GTN Shin-Okubo Store

▼ GTN Shin-Okubo Store Contact Information ▼
・Business hours: 10:00 am – 6:30 pm
・Closed: Open yea r-round (except during New Year holidays)
・Phone: 03-5155-4673
 *Please note that business hours may change, or the store may close temporarily.
  Check the GTN Mobile website for the latest updates.

GTN Osaka Store

▼ GTN Osaka Store Contact Information ▼
The GTN Namba Marui store closed at Namba Marui on Sunday, November 24, 2024.
We sincerely thank all our customers for their support.
The GTN Osaka store is open from Monday, November 25, 2024.
・Business hours: 10:00 am – 6:30 pm
・Closed: Open year-round (except for New Year holidays)
・Phone: 06-7777-3566
*Business hours may change, including shortened hours or temporary closures. Please check the GTN Mobile website for the latest updates.

If you are planning a trip to Osaka,
Please feel free to contact us via the GTN Osaka store Instagram below!

Notes

The devices that can be used are limited to SIM-free devices or SIM-unlocked devices.
Please be sure to check before purchasing.

For more information about long-term plans, pocket Wi-Fi, home internet and other services, please check the GTN Mobile website .

GTN Mobile