Thanks to XDA member yozpalang for pointing out this little trick for those with MagicJack accounts. If you have one, you can now make calls from your phone using it. As quoted from the post made by the member:

Get the CSipSimple here or search the market and follow the steps here to get your magicjack's password then make free calls all day long.

remember your majicjack user name is E yourmagicjackphonenumber 01and your sever info is proxy1.yourcityname.talk4free.comand your password looks something like this 2345GH45TDRF35THY234 it is 20 char

Reminder: magic-jack costs $20 a year

It uses an app called CSipSimple. To learn more about this check out the discussion thread.