Warning: Do not enter any wrong unlock unlock codes on your Samsung SGH-I780 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.1. Switch ON your Samsung SGH-I780 with a
NOT ACCEPTED SIM Card.
2. Enter the pin code to simcard.
3. At the top of screen an "exclamation mark" icon will appear.
4. Click on "exclamation mark" icon.
5. The link "settings" will appear, click on it.
6. Virtual keyboard appears on screen with Enter PIN prompt.
7. Enter your unlock code.
NOT ACCEPTED: We mean, to use a sim card from a network other then the network your Samsung SGH-I780 is locked to.
Each Samsung SGH-I780 mobile phone has an unique unlock code. You can buy the unique unlock code for your Samsung SGH-I780 mobile phone at www.mobileunlocksolutions.com.