Originally Posted by lancyds
I have installed Viber on my phone and my son's phone. When I dial him or another Viber user, they can hear my voice but I cannot hear their voice. I have an HTC Amaze from WIND Canada
It could be that the network you are connected to is blocking Viber's traffic.
1. First, please try uninstalling and reinstalling Viber when connecting to a few different WiFi networks (in order to pinpoint the source of the problem). What are the results?
2. Also, please make sure the following ports are enabled ("forwarded") on your routers or firewalls:
TCP: 5242 + 4244
UDP: 5243 + 9785
(if you are not sure how to enable ports, you may contact your router manufacturer)
* However, 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: http://helpme.viber.com/index.php?/Knowledgebase/Article/View/45/3/is-your-android-compatible-with-viber-system-requirements
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.