I bought an Iphone 4S locked to TMN last week and I can not use the Viber.
When I make or receive a call, do not hear the person I'm talking about. Just listen when I put it on loud speaker or put my headphones.
Any ideas how to fix this problem?
Are you able to make regular phone calls and the caller hear you? If so, then I would say to troubleshoot the application, and that could include making contact with the developer.
In a regular phone call this don't happen...
I had try to unnistall e reinstall the Viber app, but the problem persists.
Doing a search, I found this discussion https://discussions.apple.com/message/17387294#17387294 that had more information and also something from Viber support. Try it and see if that helps.
Retrieving data ...