Some secret tips & tricks & codes for symbian based nokia mobile phones nokia 6630

To know the IMEI (International Mobile Equipment Identity) No.: *#06#
To check the phones Software revision. *#0000#
To enter the service menu type. *#92702689#
Clock Stopping. *#746025625#

#06#
Display the IMEI (GSM standard)
*#0000#
Display the version and date
*#bta0#
Display the Bluetooth MAC address (models with build-in Bluetooth radio, activate first to show address)
*#mac0wlan#
Display the WLAN MAC address (models with build-in Wi-fi radio)
*#opr0logo#
Clear the operator logo (3310 and 3330 only)
*#pca0#
Activate the GPRS PCCCH support (early GPRS models)
*#pcd0#
Deactivate the GPRS PCCCH support (early GPRS models)
*#res0wallet#
Reset the mobile wallet (models with mobile wallet)
*#res0#
Soft-format the memory (Symbian models only)
*#rst0#
Reset to factory defaults, confirmation required (DCT4 or newer)
*#sim0clock#
Display the SIM clock status (DCT3 only)
*#ssn0#
Display the manufacturing serial number (mid-range and premium, non-Symbian models, and those devired from them)
*#war0anty#
Display the manufacturing and repair info (no exit on DCT3)
*efr0#
Enable EFR encoding (pre-2003 models)
#efr0#
Disable EFR encoding (pre-2003 models)
*hra0#
Enable HR encoding (pre-2003 models)
#hra0#
Disable HR encoding (pre-2003 models)
#pw+1234567890+n#
Display the SIM lock status: (pre-2003 models)n = 1: provider lockn = 2: network lockn = 3: country lockn = 4: SIM lock