pktel is a Mobile VoIP dialer application that allows you to make VoIP calls from any Android handset by using 3G/Edge/WI-Fi Internet connectivity.
The main features of this applications are-
• Making VoIP calls to supported GSM numbers and to other sip clients.
• Call logs and making call from call logs.
• Using phone contacts to call a number from Phonebook.
• Showing rates and Minutes on Screen