Call & Messaging Applications:
We can confirm that you can continue to use VoIP services for calling / instant messaging applications for messaging and this can be a great way to keep in touch!
This will also help you to avoid incurring additional usage charges for our standard voice calling and SMS text messaging service. Any usage of this type will just be deducted from your high speed data allowance instead.
However, please be advised that certain applications will allow the call to be placed / the message to be sent using the standard voice calling / SMS text messaging service if a cellular data connection or a Wi-Fi network is not available.
If the application you are using includes this as an option, you would need to ensure that this option is disabled (or you may unintentionally incur usage charges for standard phone calls and SMS text messages).
Please also note that when using a ‘Japan Unlimited’ SIM card, use of the “LINE” application will not be supported. For this application to fully function, you would require access to a personal Softbank account. As your SIM card is linked to a Softbank business account through Mobal Communications, access to this account would not be possible.