Hi, I have Sony Ericsson E15i. I have installed & reinstalled Viber already hundred times. The viber disconnects after 5-7 seconds on the first call. After that the Viber stops working and also when I make calls from the phone nobody can hear me. I have to swith off & on the phone and after that they can hear me. Then I have to reinstall Viber, install it again and it works about 5 sec during the first call, and then disconnets. I really dont know why my Viber does not work properly.