*01763*8371# (*01763*VER0#) - Firmware Version *01763*3641# (*01763*ENG1#) - Enable Engineer Mode hold power key to leave then disable *01763*3640# (*01763*ENG0#) - Disable Engineer Mode *01763*8781# (*01763*TST1#) - Test #1 (test early wdt looping to dump, need to remove battery from phone) *01763*8782# (*01763*TST2#) - Test #2 (test irq dis looping to switch, resets itself) *01763*8783# (*01763*TST3#) - Test #3 *01763*8784# (*01763*TST4#) - Test #4 *01763*8785# (*01763*TST5#) - Test #5 *01763*87872# (*01763*TST72#) - Test #72 *01763*8788# (*01763*TST8#) - Test #8 *01763*5640# (*01763*LOG0#) - Disable LOG Get through to customer services free by dialling 1611. On T-mobile to get your account balance call #999#. *01763*5641# (*01763*LOG1#) - Enable LOG *01763*4634# (*01763*IMEI#) - IMEI *01763*6370# (*01763*MEP0#) - Disable MEP menu (unlock menu) *01763*6371# (*01763*MEP1#) - Enable MEP menu (unlock menu) (go to settings,security,meplocks select insert handset code,default is 0000, allows to check lock status and disable locks only if u have correct code dont try guessing!!) *01763*63866330# (*01763*NETMODE0#) - Disable NetMode *01763*63866331# (*01763*NETMODE1#) - Enable NetMode Disclaimer: Some of these Codes may not Work, it depends on phone model! Try these Codes at Your own Risk! I'll take no any responsibility due to damage, data lost or device malfunctioning. Complaints will not be entertained. !