Hard Reset SAMSUNG i640
- Cell phone must be switched on.
- Press Power key to turn device on.
- Press Call key to open dialer.
- Type this code using dialer: *2767*3855#
- Call key to confirm operation.
- Device must restart, so wait patiently.
- Success! your device is now back to the Factory settings.
Help! This doesn't work
Hard Reset will erase all of your data
All described operations you are doing at your own risk.