i paid to have a phone unlocked, after he retrived me the unlock number, it then requested a MASTER UNLOCK NUMBER? Could you plz. enlighten me as to what the heck this master unlock code is for, and who does them. I heard this far its free to have undone, but the chap at the phone store never seen this in all the phones his store has unlocked? Seems everyone was giving me the right Master unlock code, problem was only 7 #'s when 8 are needed! added a ZERO in front to make 8 numbers and it unlocked my phone. COUNT UR UNLOCK NUMBERS!