GTN Mobile Japan, just GTN Mobile, is an NTT DoCoMo MVNO.
It is one of the MVNOs offering SIM cards to tourists.
The NTT DoCoMo network, which GTN Mobile uses, uses the following frequencies:
- 2G: N/A – shut down in 2012 (yes, about a decade ago)
- 3G: 800 MHz & 2100 MHz
- 4G/LTE: 700 MHz (Band 28), 800 MHz (Band 19 – not the usual Band 20), 1500 MHz (Band 11), 1800 MHz (Band 3), 2100 MHz (Band 1) & 3500 MHz (Band 42)
- 5G NR: 3500 MHz (n78) & 3700 MHz (n77) – not for tourists using GTN Mobile … yet
- VoLTE: Yes, but you cannot make calls as a tourist using GTN Mobile
- VoWiFi: Yes, but you cannot make calls as a tourist using GTN Mobile
This is what you will learn about GTN Mobile:
* Coverage
* How to Get a GTN Mobile SIM Card & SIM Card Price
* Topping Up Options & Methods + Balance Check
* Plans & Packages
* APN/Internet Settings
Coverage – GTN Mobile Japan
GTN Mobile is an NTT DoCoMo MVNO, meaning GTN Mobile uses the NTT DoCoMo MVNO network and does not have its own mobile infrastructure.
NTT DoCoMo has the best coverage in Japan (although all Japanese mobile operators have basically perfect nationwide coverage).
With GTN Mobile, you do not get full access to the NTT DoCoMo network, but it is still extensive.
Below on the left, you have NTT DoCoMo's coverage and a coverage map for another NTT DoCoMo MVNO on the right produced by Speedtest:
SIM Card Price – GTN Mobile Japan
You can get a GTN Mobile SIM card for 5000 JPY or 10 000 JPY from a handful of stores in Kyoto, Namba & Shin-Okubo (Tokyo). They can also be delivered to the post offices in various airports, including the Tokyo Haneda Airport, for 700 JPY. Delivery to your accommodation will cost the same.
The following two GTN Mobile SIM cards, also called Data-only SIM cards, are available:
| Price | Data | Validity |
|---|---|---|
| 5000 JPY | 50 GB | 30 days |
| 10 000 JPY | 135 GB | 90 days |
While GTN Mobile has several other, perhaps attractive to you, plans listed on its site, tourists cannot get them – only residents.
GTN Mobile SIM card can be delivered to the following international airports:
- Chitose – New Chitose Airport (CTS)
- Chubu/Tokoname (Aichi) – Nagoya/Chubu Centrair International Airport (NGO)
- Kagoshima – Kagoshima Airport (KOJ)
- Osaka – Kansai International Airport (KIX)
- Tokyo – Tokyo-Haneda International Airport (HND)
- Find out how much SIM cards cost in every country, including data-only SIM cards and tourist SIM cards, offered by each mobile operator + information about starter benefits (lookup tool)
GTN Mobile has no eSIMs.
Note that the Japanese mobile operators require your identification (passport) for (future) eSIMs and for physical SIM cards.
You may want to get a travel eSIM for Japan, which can be cheaper than getting a SIM card from B-mobile Japan (in some cases).
Especially when getting an eSIM covering popular Asian destinations if you do not stay in just Japan or a global eSIM valid for up to a year if you want one eSIM to work practically worldwide.
My Japan eSIM buying guide analyzes various eSIM options of eSIM providers I have tested extensively worldwide.
Here is a quick introduction to them:
- Airalo: Moshi Moshi (Japan only), Asialink &Discover+ (130 countries worldwide + call and text feature) – use code NEWTOAIRALO15 (15% off – first-time users only) or AIRALOESIM10 (10% off)
- Alosim: Japan – use code PTW (5% off – no limits)
- Holafly: Japan – these eSIMs have unlimited data – use code PHONETRAVELWIZ (5% off – no limits)
- Nomad: Japan, APAC (up to 20 countries) & Global (up to 139 countries) – use code ADU123 (3 USD off – first-time users only)
For more information, such as the prices and data allowances, check out my Japan eSIM buying guide
Note that NTT DoCoMo, the network GTN Mobile uses, offers VoLTE (Voice over LTE (4G)) and VoWiFi (Voice over WiFi).
But as you can only get data-only SIM cards in Japan, the features will not be available to you 😓.
Top-Up, Recharge & Balance Check – GTN Mobile Japan
You cannot purchase top-ups for the GTN Mobile SIM cards because the validity cannot be extended, nor can credit be added.
Packages, Plans, Bundles & Offers – GTN Mobile Japan
You cannot purchase additional plans for the GTN Mobile SIM cards because the validity cannot be extended.
You will have to purchase a new GTN Mobile SIM card if you need more data or if the SIM card expires.
APN/Internet Settings – GTN Mobile Japan
- Name: gtnmobile
- APN: plus.acs.jp
- Username: ym
- Password: ym
Note: leave anything not mentioned above untouched.