Genki Mobile’s Travel SIM is a data-only SIM and does not include a phone number. That means you can’t make regular phone calls or send SMS using the Travel SIM. You can still call and message through apps like WhatsApp, LINE, Messenger, Instagram, and similar services. If you use an iPhone, iMessage and FaceTime also […]

In most cases, yes—if your phone supports dual SIM (for example: one physical SIM + one eSIM, or dual physical SIM depending on the model). Many travelers keep their home SIM active for their phone number and use the Japan Travel SIM for data. If your phone only supports one SIM at a time, inserting […]

Yes. Your phone must be SIM-free / unlocked to use a Japanese Travel SIM card. If your device is locked to a carrier, the SIM may not work until your carrier unlocks it. If you’re not sure, we recommend checking your phone’s SIM restriction status with your carrier before ordering. For travelers who have carrier […]

A Genki Mobile Travel Physical SIM card is a small chip you insert into your phone to use mobile data in Japan. Once the SIM is installed and your phone is set up correctly, it connects to a local Japanese network, allowing you to use the internet shortly after landing—without needing a separate Pocket Wi-Fi […]