Not so long ago, I bought Samsung SGH-A157 from US. Since it is locked to ATT, I can not use it here in Bulgaria. Here is what I found in the web in order to unlock it:
- Remove SIM card and turn the phone on.
- Dial: *2767*3855# . This will initiate a Full reset for Samsung A157.
- After phone restart, enter #*7337# . This will remove SIM lock and reset the phone.
- Power off the phone. Now you can enter your SIM, turn the phone on and enjoy!
This procedure is working for me! Good luck :)
