How to Make Free Calls on an Unlocked Nextel Phone

1. Connect your Nextel phone to the Internet.
2. Register with a VoIP service, such as Skype, Google Voice or Nimbuzz. Any of these services will allow you to make free calls to any other phone that has the same software installed, or low-priced calls to all other phones. As of December 2010, it is free to register for all of these programs.
3. Download the program to your Nextel phone and install it by double-clicking on the file. Google Voice doesn't require a download. You just need to log into the account. Click 'Next' and agree to the terms and conditions by pressing 'OK.' Wait for the program to install.
4. Go to 'Menu' and 'Applications' and open up the VoIP software. Click on the phone icon and type in the phone number that you wish to call. Click the 'Call' button and wait for the person to answer.