| Just found this forum and could use help. I have a iPhone 4s that is Verizon. Bro-in-law gift. I am currently using on Page Plus, but would love to use on T-Mobile in U.S. To my knowledge my bro-in-law did not request an unlock from Verizon while still on their system (only unlocks sim for int'l use anyway). Don't want to jailbreak. I'm a bit confused, which R-SIM do I need to unlock for this use, the Air, mini or...? Thanks in advance for you input |