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iPhone 6s, iOS 10
Do you have sound notifications enabled for Viber? Perhaps disabling that option will help.
I attempted turning off sound notifications and it did not fix the issue. My phone is currently on silent also, but thank you for the suggestion.
Okay, then try to go to Settings in Viber, select Notifications and then uncheck 'In-App Sounds'. I hope it solves your issue.
Perfect, thank you!
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