Nokia Codes - part 1

The following are very useful codes for nokia cell phones. These codes will work on almost all modern nokia cell phones.
But when you decide to try them, you take your own risk...!

*#06#
For checking the International Mobile Equipment Identity (IMEI Number).


*#0000#
Displays your phones software version, 1st Line : Software Version, 2nd Line : Software Release Date, 3rd Line : Compression Type.

*3370#
Activate Enhanced Full Rate Codec (EFR) - Your phone uses the best sound quality but talk time is reduced my approx. 5%

#3370#
Deactivate Enhanced Full Rate Codec (EFR)


*4720#
Activate Half Rate Codec - Your phone uses a lower quality sound but you should gain approx 30% more Talk Time.

#4720#
Deactivate Half Rate Codec.

#pw+1234567890+1#
Provider Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols).

#pw+1234567890+2#
Network Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols).

#pw+1234567890+3#
Country Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols).

#pw+1234567890+4#
SIM Card Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols).

*#9999#
Phones software version if *#0000# does not work.

*#147#
(vodafone) this lets you know who called you last.

*#1471#
Last call (Only vodofone).