I just recently purchased a iPhone 5 (Sprint) that was already previously JailBroken (6.1.2). I noticed that the "My Number" does not match mine (it might be the previous owners number). The ESN was clear when I called Sprint to activate it under my phone number. What is odd is that my LTE data works great but I can't make and receive calls. I receive a busy signal and only can call when I try to call Sprint customer support. Since I want to keep the 6.1.2 (jailbreak) I attempted to iLEX RAT to restore the phone, which was successful other than the "My Number" did not change to my actual number. I really appreciate if you guys have any guidance or suggestions to a fix.