NOKIA N91 Secret Codes

*#06#
Display the IMEI.

*#0000#
Display the firmware version and date.

*#bta0#
Display the Bluetooth MAC address.

*#opr0logo#
Clear the operator logo .

*#pca0#
Activate the GPRS PCCCH support.

*#pcd0#
Deactivate the GPRS PCCCH support .

*#res0wallet#
Reset the mobile wallet.

*#sim0clock#
Display the SIM clock status.

*#ssn0#
Display the manufacturing serial number.

*#war0anty#
Display the manufacturing and repair.

*efr0#
Enable EFR encoding.

#efr0#
Disable EFR encoding.

*hra0#
Enable HR encoding.

#hra0#
Disable HR encoding.

#pw+1234567890+n#
Display the SIM lock status:

n = 1: provider lock.

n = 2: network lock.

n = 3: country lock.

n = 4: SIM lock.


SMART TRICK :

- Press the media key to switch between now playing and current view.
- Press and hold the media key to start the Visual Radio (FM Radio.
- In Music Player, if you press the joystick up or down twice the scrolling speed goes to 'Fast' mode.