To use a non-Japanese mobile phone in Japan, it has to be compatible with Japanese mobile phone networks (3G UMTS 2100 MHz or 3G CDMA2000 800 MHz). Such sets can be used via international roaming (although roaming fees might amount to astronomic levels!) or via wireless networks (WiFi) permitting internet telephony (VoIP) through services like Skype.
Another alternative is to acquire a rental or prepaid SIM card from a Japanese carrier or to rent a phone plus SIM card. SIM cards and rental phones can be purchased at Narita Airport, Haneda International Airport, and Kansai International Airport or through rental phone companies, who will mail the set and the SIM card to your hotel or your residence.
The three major mobile phone operators in Japan are NTTdocomo, SoftBank, and AU. As of 2011, all of them offer 3G models, such as the iPhone, but only SoftBank has a 3G/UMTS SIM card-based prepaid service. You can find more information on providers and rates below.
Japan Travel SIM
Internet Initiative Japan Inc. (IIJ), an Internet access and comprehensive network solutions provider, announced on 30 September 2014 that it would offer a package featuring a prepaid SIM card with 2 gigabytes of high-speed data volume for foreign visitors to Japan. The Japan Travel SIM powered by IIJmio went on sale on 2 October 2014. Customers can start this mobile data service by inserting a SIM card into an unlocked SIM device and configuring it.
This package includes a Brastel Card, an IP phone service provided by Brastel Co., which allows customers to make inexpensive domestic and international calls. Also, customers can use credit from a prepaid Brastel Card to add data volume to a SIM card. The SIM card will be operational from the first day of data transmission to the end of the third month. The period cannot be extended, nor is the service be switched to a monthly plan.
It has been available at Bic Camera, Kojima and Sofmap stores and other retailers since 2 October 2014. After mid-October, it will also be available at Tourist Information Center Tokyo and Khaosan hostels in Tokyo and Kyoto.
Source: Asahi Shimbun, 30 September 2014
Mobile Virtual Network Operators (MVNO)
- B-Mobile (NTT Docomo)
- Biglobe (NEC)
- DMM mobile (NTT Docomo)
- IIJ (NTT Docomo)
- Mineo (KDDI)
- NifMo (Nifty-Fujitsu)
- OCN (NTT)
- Rakuten Mobile (NTT Docomo)
- UQ Mobile (KDDI)
- G-Call Rental Phone
- JAL ABC Rental Phone
- Mobal Narita
- JP Smart Sim
- PuPuRu Cell Phone Rental
- Softbank Global Rental
- WIFI Box
International SIM Cards
Related link at the Japan Forum
A vending machine selling prepaid SIM cards