Warning: Do not enter any wrong unlock unlock codes on your Samsung S400 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.Method 1:
1 - Switch ON your Samsung S400 with a
NOT ACCEPTED SIM Card.
2 - Samsung S400 will ask for "Password".
3 - Enter the Unlock Code.
OR (if the Samsung S400 shows "Insert Correct SIM Card")
Method 2:
1 - Switch ON your Samsung S400 with a
NOT ACCEPTED SIM Card.
2 - Don't bother about what's being displayed on your Samsung S400.
3 - Compose :
#0111*CODE#.
NOT ACCEPTED: We mean, to use a sim card from a network other than the network your Samsung S400 is locked to.
CODE: Its the unique Unlock Code for your Samsung S400.
If method 2 does not work, you can try method 2 again but this time without any SIM card on your Samsung S400.
Each Samsung S400 mobile phone has an unique unlock code. You can buy the unique unlock code for your Samsung S400 mobile phone at www.mobileunlocksolutions.com.