Blackberry Z10 IMEI number not found
I bought almost 2 years ago a BB Z-10, I have used since then as a pre-paid phone, it has been working neat... I am trying to move from this phone to another one (as some of you, I was so disappointed with BB)... I tried to unlock the device in order to sell it or simply give it to a member of my family... However, when going through the process of unlocking the device, the IMEI number apparently is not found by AT&T, I checked 100 times and it is the one displaying on the screen, so it is not my mistake... Does anybody has dealed with this in the past?... What do you do correct the problem and asking the device be unlocked??... I would really appreciate your help...