The Android Dialler is a FREE DOWNLOAD from just-VOIP.

Connection
The dialler always tries to automatically detect the best connection method in the following order: (1) WiFi - for WiFi enabled devices (2) Direct TCP - a connection to be opened from the Android phone..
Users who cannot establish WiFi connection are advised to use Direct TCP.

The just-VOIP account username and password need to be entered, and then you can make your call as you would normally through the just-VOIP service.

International numbers are dialled with the international code (without 00). Example, to call India you would dial 91xxxxxxxxxx Please remember to add 44 before calling any UK number. Example, to call our customer service number in the UK dial +44 844 804 2802.

just-VOIP uses SIP (session initiated protocol) and is justphone's lowest cost telephone service, with prices starting at less than 1 US cent per minute! (less than 0.5p in UK currency). Click here for more information.