By using special software users can make free International phone calls anywhere by using the Free Internet phone programs.
Free calls with Google Voice can be done only to Canada and US.
Google Voice is available easily as smartphone app with Android.
iOS, Blackberry and as web app for other smartphone devices.
To create the contact with recipients it is essential for them to have a Skype account.
Once the contact has been located they can be added in the contact list and connected through Skype.
With Skype all the four types of applications for connections is possible i.e.
PC to PC, app to PC, app to app, and PC to app.
Desktop versions are also available for Linux, Mac, and Windows.
Blackberry users have BBM as their default app other OS users need to get this app installed.
Using the PIN number other users / contacts can add themselves to the BBM list.
However, the most common ones have been described for the benefit of the users.
source: www.techworm.net
