If you are like me and buy awesome phones to put on prepaid carriers then you'll be interested in this...
I was messing around with my i535 trying to get it to work on straight talk for a week or so. at first i couldn't figure it out, I figured it was probably like other
verizon phones where they block the ability to use them on other carriers. Later that week I decided to try Synergy rom and with that rom i found that all you have to do is put in the sim from the carrier and it would automatically search for the carrier and even automatically put in the correct apn for me. I've tried
StraightTalk, AT&T, T-mobile, and simple mobile and they all work.