Nokia Secret codes

Code	Description
*#06#	Display the IMEI (GSM standard)
*#0000#	Display the firmware version and date (with variant info on S40 second edition or newer)
*#9990#	Says Bluetooth Test Mode on Symbian models; accepts without any messages and Bluetooth behaves abnormally on non-Symbian ones (models with build-in Bluetooth radio, activate first to use)
*#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 DCT3, basically all DCT4 and BB5 non-Symbian models)
*#war0anty#	Display the manufacturing and repair info (no exit on DCT3) or total talk time on Symbian models Note: many S40 firmware releases since 2009 disable this code
*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 lock n = 2: network lock n = 3: country lock n = 4: SIM lock
n#	n = 1..999: recall the number stored in the SIM location n (DCT3, DCT4, BB5 models