Hey i just got a iphone 2g (1st gen) and i jailbroke it on 3.1.2 and unlocked it with bootneuter Bootloader 3.9. i put my tracfone sim in and it displays "No service" But when i go to contacts it displays the phone number on my sim card. Should i change the Iphones imei number? should i upgrade to 4.6 bootloader? i dont understand if its displaying my phone number.. its reading the sim. This website shows how to changed imei http://www.iclarified.com/entry/index.php?enid=657 Thnaks.