Di bawah ini adalah kumpulan kode-kode rahasia Handphone NOKIA.
*#0000# : Tipe HP

*#06# :nomer IMEI

*#92702689# :Garansi

*#3370# :Enable EFR(Apaan tuch..?) (To disable, Type it again. Phone Automatically Restart)

*#0000# :View Software version

*#7780# :Restore factory settings

*#67705646# :Clear LCD Display (Operator Logo)

*#2820# :Bluetooth device address

*#746025625# :SIM lock allowed statue

*#62209526# : Display the MAC address

#pw+1234567890+1# :Show if SIM restrictors.

*#4720# :half rate Codec activation (To disable, Type it again)

*#7370925538# :S-60 (Reset)

Default code is 12345

*#3925538# : Delete the contents and code of wallet

*#7328748263373738# :Reset Phone Code. Default code is 12345

Below are some reset codes for various Series 40, 60 and the new Series 80 Communicator series (Nokia 9300/9500):

Full Reset: (clears everything off the phone memory!! Be sure to back up your contacts!!): *#7370#, 12345 and then Yes.

Soft Reset: *#7780#, 12345 and then Yes. (Also works on Nokia S40 phones as a full reset)

*#335738#

*#delset#

This deletes the Email, GPRS, MMS settings that cannot be erased via phone options. (Newer Series 40 phones only i.e. 6230(b))