My father gave me his mint android nexus 4g. he was using it on a contract until he upgraded his phone. Its a CDMA. (just learning this mess,be easy on me lol) Annnyways. Im wanting to use it on a prepaid plan. Is it possible with it being a prior contract phone? Who can do it? Hopefully a bigger chain so i can get the cards etc at wally world. I hate doing stuff like this online,as its usually a pain.