Untill very recently the Apple Store allowed only for SIP client applications which were limited to WIFI. The policy has changed and now Voipswitch customers can download the softphone wich support in addition to WIFI, 3G and Edge data connection. Download and test our new version of Vippie softphone. Search for the Vippie or voipswitch name on the Appstore. The dialer works with our demo server www.callto.net To receive a free test account please contact sales@voipswitch.com