how can i unlock a motorola c139?

[smm]

i have t-mobile and the c139 that i own is for att or cingular i bought it as a go phone from when att was cingular and i know i can use it with other att sim cards as a regular phone how can i unlock it so i can use it under t-mobile

[jocoolguy]

To Unlock the Phone from Network Lock use the Unlock code,You can get the code and instructions from here
Wickedunlock.com and Unlock it....You can follow the instructions below and enter the code..

Motorola C139 Unlocking Instructions

Warning : Do not enter any wrong unlock codes on your Motorola C139 mobile phones. If you enter over a certain amount of wrong unlock codes on your Motorola C139 mobile phone, your phone may get hard locked and sometimes become unusable.

1 - Switch ON your Motorola C139 with a NOT ACCEPTED SIM Card,
2 - Phone will display "Enter Special Code",
3 - You can now enter the Unlock Code.

NOT ACCEPTED: We mean, to use a sim card from a network other than the network your Motorola C139 is locked to.

WARNING: If one of theses messages appear :

- "Contact Service Provider"
- "Tampert Alter"
- "Wait before enter special Code"
- "Contact Service'

It's because you or somebody already entered too many wrong codes, you just have to leave the Motorola C139 ON with the errors message and after 40 minutes to 2 hours the message "Enter Code Special" will appear again!