SMS Backup and Restore for Firefox OS
Create backup-messages.xml in your SD card.
Each messages are store as xml regarding the scheme below :
<type>sms</type>
<id>1</id>
<threadId >1</threadId>
<body>Test </body>
<delivery>received</delivery>
<read>true</read>
<receiver>xxxxxxxxxx</receiver>
<sender>xxxxxxxxxx</sender>
<timestamp>Tue Jul 23 2013 11:54:09 GMT+0200 (CEST)</timestamp>
<messageClass>normal</messageClass>
Restore not implemented yet.