Originally Posted by ebrehe
I've same problem, i've got htc one x and the Viber plays message notifications really loudly.It's really bothering me. If i couldn't change it what can i do?
Please note that Viber does not officially support your device yet, and that may be the reason for the problems you are experiencing. Here is the full list of officially supported devices: Is your Android compatible with Viber (system requirements)? | Viber Support
We are continuously working to adapt Viber to more and more devices, and we hope to attend to the problems with your device soon. We apologize for the inconvenience.