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Howto use Nokia secret codes

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*#2820# (*#BTA0#) 

- Displays the Bluetooth device address of your phone.

*#62209526# (*#MAC0WLAN) 

- Displays the MAC address of the WLAN (wireless lan) adapter. This is available only in the newer devices that support WLAN.

*#7370# (*#RES0#)

- Resets your phone to the default factory settings. Usually you will need this code when you want to reset your phone back to the same condition when you got it for the first time. When the phone ask for security code, the default one is 12345 unless you have specified one yourself.

Warning: Before you do reset the phone, make sure that you don’t have important data and that you know the security code for your phone. Your data on the phone memory will be lost once you reset it.

*#7780# (*#rst0*) 

- This will soft reset your phone. It is different from *#7370# because all data, like contacts, calendar and notes, are not removed. It will only reset the phone settings, such as profiles, themes and shortcuts. The default lock code is 12345.

*#92702689# (*#war0anty#) 

- Display the life timer information of your S60 phone, i.e. the total time of phone call in minutes.

Another key combination which is used to hard reset the phone similar to #*7370 which can when the phone cannot reboot. Switch off the phone then press and hold Call key (Green key) + * key + 3 key + power button for a couple of seconds.

Note: This key combination doesn’t work on all S60 phones.

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