All Samsung Hard Reset Codes - GSM-NICE | Codes for Samsung phones

Samsung Code Function

*#1111#                      Display software version
*#1234#                      Display firmware version
*#2222#                      Display hardware version
*2767*3855#              Reset: delete all data and reset all settings
*#0*#                          Test/service mode, e.g. Galaxy S3 mini
*#*#4636'*'*               Test/service mode, e.g. Galaxy S2

*2767*3855#              Reset the password and setting

*2767*2878#              Reset the password and phone setting

This will allow you to format the phone easily