Have a friend who is an Alltel mobile customer and I am Straight Talk and I previously had a Verizon mobile phone and it was free because from what i understand Verizon and Alltel joined together at one point....and it is my understanding that Tracfone and Verizon are both part of Straight Talk so I am asking this question only to make sure that it is free for my friend to call me still! Thanks for checking the question out!