To unlock a Samsung mobile phone, get an unlock code from unlocking service providers, including your current mobile network. You can also buy unlock codes from sites, such as Ebay. Different Samsung models have different ways to unlock. Switch on your phone and follow the steps to enter the code.
After getting an unlock code, switch on your phone with a previously unaccepted SIM card. The phone asks for a password and you must enter the unlock code here. Alternatively, if your phone displays "Insert Correct SIM Card," switch on the phone with a not accepted SIM card. Type #0111*CODE# and press the SEND key. The phone should show "Personalization Cancelled."