Nokia secret codes :may not work in all phones..

 
Use these codes at your own risk...


perfom a hard reset on Nokia C3-01  *#7370#

perfom a soft reset on Nokia C3-01  *#7780#

*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.
*#0000#    Displays your phones software version, 1st Line : Software Version, 2nd Line : Software Release Date, 3rd Line : Compression Type.
*#9999#    Phones software version if *#0000# does not work.
*#06#    For checking the International Mobile Equipment Identity (IMEI Number).
#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).
*#21#    Allows you to check the number that "All Calls" are diverted to.
*#2640#    Displays security code in use.
*#73#    Reset phone timers and game scores.
*#746025625#    Displays the SIM Clock status, if your phone supports this power saving feature "SIM Clock Stop Allowed", it means you will get the best standby time possible.
*#7760#    Manufactures code.
*#7780#    Restore factory settings.
*#8110#    Software version for the nokia 8110.
*#92702689#    Displays - 1.Serial Number, 2.Date Made, 3.Purchase Date, 4.Date of last repair (0000 for no repairs), 5.Transfer User Data. To exit this mode you need to switch your phone off then on again.
*#94870345123456789#    Deactivate the PWM-Mem.