CORAL unlock code via Universal tools 2014 free here
Coral 100, Coral 200I, Coral 255, Coral 266, Coral 268, Coral 270, Coral 450, Coral 550, Coral 555, Coral 558,
Coral 640, Coral 690, Coral 725, Coral 800, Coral 850
Instructions release
1- Select the "CORAL"
2- The following menu should appear.
3. Enter your 15-digit IMEI number and choose the model and click "CALCULATE"
4- Your Unlock Code (NCK) appears in the right pane.
5. Insert a SIM card from another operator and enter the unlock code (NCK) when prompted.
* If you are asked to enter the SPCK too.
6. Your phone is now unlocked Coral.