In order to activate your ‘Japan Unlimited’ SIM card, please visit and enter your SIM card serial number –

You will then be prompted to enter your login details for your Mobal online account (MyAccount). If you have forgotten your login details (or you have not received an email containing login instructions), please visit this link.

Once you have gained access to your online account, please click on the “Activate SIM” button shown to the right of your ‘Japan Unlimited’ SIM card.

After clicking this button, a new window will appear with various options.

In the “Select Your Service Type” section, you will be able to choose a “Voice + Text + Data” option or just a “Voice + Text” option.

If you select the “Voice & Text” only option, you will only be able to select the “Ongoing Voice & Text” plan (at a rate of ¥1000 per month) and your service start date as shown below –