"Disaster Message Board" is an application to connect to Disaster Message Board Service and Disaster Voice Messaging Service provided by SoftBank Mobile Corporation.In case of a major disaster such as an earthquake with Seismic Intensity of 6 lower and above,

Disaster Message Board :
You can register, confirm, and delete your whereabouts and safety on SoftBank Disaster Message Board.You can also automatically send a notification message that you have registered a message on SoftBank Disaster Message Board to pre-registered e-mail addresses of families, friends, etc.

[About packet charge]
SoftBank Disaster Message Board requires no packet charge except below operations.Download/Install this application via cellular network Access to other carriers’ Disaster Message Boards

Disaster Voice Messaging Service :
Even when the phone line is overwhelmed during a disaster, you can send and receive voice messages about the safety of you and others through the service.

[About packet charge]
SoftBank Disaster Voice Messaging Service requires no packet charge except below operations.
Use Disaster Voice Messaging Service while roaming overseas

*SoftBank Disaster Voice Messaging Service is not supported in SoftBank X series, 941SC, 920SC and 820SC. These models can not receive voice messages you send through this service.