How to unlock a Nokia coded

It is possible that some codes only go on certain models of Nokia phones, but most will go to any Nokia phone model ... restriction code nokia.
* # 06 # - unique identification number of a phone.
* # 0000 # - Display the version and date code software (firmware), phone model and operator.
* # 92702689 # - find out how many hours were in total since that phone is out of the factory.
* # 62209526 # - Wireless MAC Address
* # 2820 # - Bluetooth MAC address
* # 7370 # - Format phone, lost all phone settings and all data in memory
* # 7780 # - Format Factory, return to factory default settings.
* 3370 # - To activate EFR's, The entire emission rate, which leads to a very good sound in both emission and reception.The phone will stop and restart the active function. Function will remain in memory until a future typing the code.With this code improve sound quality, but battery will discharge faster.
# Pw +1234567890 + x # - instead of "x" type 1, 2, 3 or 4, with the following meanings:1 - Find out if your phone is locked to the provider2 - Network lock;3 - Country lock;4 - Simcard lock.
* # 92702689 # - Display IMEI, month and year it was manufactured, the date when it was bought, the newer models look and life timer, how long was used, how to talk to him ...
* 4720 # - Reduces sound quality but increases battery life by about 30%

Network unlock code
# Pw + (master code) + Y #
With this code you can enable / disable restricting Simulator (SP-lock). To
obtain the symbol "p" using the "*".
Y must be 1,2,3 or 4 depending on which block you want:
# Pw +1234567890 +1 # for Provider-Lock status
# Pw +1234567890 2 # for Network-Lock status
# Pw +1234567890 3 # for Provider-Lock status
# Pw +1234567890 4-Lock status # for SimCard
"Master code" is a 10-digit code based on IMEI of the phone, you can generate master code example here: ... http://nokiafree.org/free-nokia-unlock-codes