This is an official representative of Viber Media.
@Darkisha- Is your device jailbroken by any chance? Do you get any error message when you try to call? Which Viber version do you have ( you may find this info under more>about)
For further assistance please feel free to contact us, we'd be happy to assist.
NO erros, no jailbreak. Ios 6.0.0 ,last version of viber. the button just doesnt respond, it shows that its pressed, changes the color and font of the button for calls, but doesent trriger any event. Messaging works fine. This especialy occures after i finish a call... Cant make another call or call back. and when someone tries to call me, they get respond that i am busy, my phone doesn't ring, i just get a new missed call
Thank you for the information.
We plan to release a major new update of Viber for iPhone (hopefully soon). Once it is available, we kindly ask that you install and test it, and let us know if the problems persist, or they have been resolved.
We apologize for the temporary inconvenience.