Viber 打不出去

yoyo 2011-03-10 22:50 | Apple

我今天用 Viber 都出現
                                                                               
an internet connection is required to place free viber calls
check ur connection and try again.......
                                                                               
                                                                               
這是怎麼回事  還是可以上網阿
   而且朋友也有這樣.....想請問 要怎麼辦  THX~~
   是3G網路收訊太差嗎