Occasionally, the Android phone we want to unlock has had its software modified. To greatly increase the chances of a successful unlocking, doctorSIM always recommends using the phone's original software.
In some cases, the IMEI number will not appear when *#06# is typed on the phone's keypad after being restored to factory settings.
To obtain the IMEI number, simply make a copy of part of the phone's software.
Follow the instructions below before doing anything else:
1) Copy the EFS folder of the root directory onto your PC or memory card. Do not cut and paste, it must be a copy. Do not alter or remove it from the root directory. We recommend using an application called "Root Explorer" as it will display that folder.
2) If after pressing *#06# on the phone's keypad the IMEI doesn't appear, recover the EFS folder copied previously overwriting the version without the IMEI number.