How to unlock a samsung galaxy s3 from many network provider carrier

Method 1:
1 - Switch ON your Samsung Galaxy S III with a NOT ACCEPTED SIM Card.
2 - Samsung Galaxy S III will ask for "Password".
3 - Enter the Unlock Code.

OR (if the Samsung Galaxy S III shows "Insert Correct SIM Card")

Method 2:
1 - Switch ON your Samsung Galaxy S III with a NOT ACCEPTED SIM Card.
2 - Don't bother about what's being displayed on your Samsung Galaxy S III.
3 - Compose : #0111*CODE#.

NOT ACCEPTED: We mean, to use a sim card from a network other than the network your Samsung Galaxy S III is locked to.
CODE: Its the unique Unlock Code for your Samsung Galaxy S III.

If method 2 does not work, you can try method 2 again but this time without any SIM card on your Samsung Galaxy S III.

Each Samsung Galaxy S III mobile phone has an unique unlock code. You can buy the unique unlock code for your Samsung Galaxy S III mobile phone here

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