When you customize Avaz, your work is automatically saved in your device. However this does not safeguard the content in the event of a breakage or loss of the device. 

If you have customized Avaz as per the individual needs of the AAC user, it is strongly recommended that you take a backup of your Avaz content and store it in Dropbox, in the Cloud. This would safeguard your customized Avaz content against breakage or loss of your device and also to enable you to transfer your Avaz content to another device that the AAC user may use. 

Click the links below for the details: 

How to take a backup of Avaz content?

How to take a backup of my Avaz content to Dropbox ?