Required frequencies for network coverage:
These SIM cards utilize the Softbank network and the primary 4G frequencies used within Japan by this network are as follows:
4G Band 1 – 2100MHz
It is important that your device supports these frequencies as coverage is available throughout most of Japan via these frequencies.
We would therefore recommend using a device that supports these 4G frequencies at minimum.
The network also supports the following additional frequencies:
4G Band 3 – 1800MHz
4G Band 8 – 900MHz
The 4G Band 8 frequencies can offer improved network coverage in mountainous regions / inside buildings etc.
The 4G Band 3 frequency is also commonly used in major areas such as Tokyo, Nagoya and Osaka.
For the best possible network coverage, we would recommend using a device that supports the primary frequencies we first mentioned (4G Band 1 – 2100MHz frequencies) in addition to as many of the other frequencies shown above as possible.
Handset Compatibility
Please be advised that due to the wide range of handsets that are available on the market (and the different versions of each handset type that are often offered by different suppliers), we do not offer a compatibility checking service.
If you are not sure if your device has been fully unlocked (to accept SIM cards from alternative service providers) or you wish to ensure that your device supports the required frequencies for network coverage, we would recommend that you query this with the original retailer / service provider you purchased the device from.