Can Walmart's Family Mobile unlock my iphone 4?

I currently have the Alcatel One Touch Fierce with the Family Mobile service but i have bought an iphone 4 from a friend, can walmart factory unlock my iphone so i can still have the same carrier? If not does anyone know how to factory unlock it for free no paying or survey's, just straight up legit!

No your friend needs to contact her cellphone carrier whoever that is and have them unlock the iPhone