Following are the top 30 most used Nokia hidden codes. These will apply on most of the Nokia Mobile Phones. We hope our readers can find some interesting secrets about nokia mobiles after trying the codes on them!
1) *3370# : this code activates EFR Codec, with this you can gain 30% more talk time but sound quality is reduced to 5%.
2) *#4720# : this code deactivates the EFR Codec.
3) *#0000# : this code displays your phone software version, software release date and compression type.
4) *#9999# : this code displays the phone software version if your phone did not accept *#0000#.
5) *#06# : this code is for checking the IMEI number of your phone
6) #PW+1234567890+1# : this code shows the Provider Lock Status ( P, W and + signs can be obtained by * key).
7) #PW+1234567890+2# : this code shows the Network Lock Status ( P, W and + signs can be obtained by * key).
8) #PW+1234567890+3# : this code shows the Country Lock Status ( P, W and + signs can be obtained by * key).
9) *#147# : this code lets you know who called you last (Only for Vodafone customers).
10) *#147# : this code shows the last call (Only for Vodafone customers).
11) *#21# : this code shows the number to which your “All Calls” are diverted to.
12) *#2640# : this code shows the Mobile Phones security code in use.
13) *#30# : this code shows the Private Number.
14) *#43# : this code shows the Call Waiting status on your phone.
15) *#61# : this code shows the number to which “On no reply” calls are diverted to.
16) *#62# : this code shows the number to which “Unreachable (No service)” calls are diverted to.
17) *#67# : this code shows the number to which “On busy calls” calls are diverted to.
18) *#67705646# : this code removes the operator logo on 3310 and 3330.
19) *#73# : this code resets the phone timers and game scores.
20) *#746025625# : this code displays the SIM clock status.
21) *#7760# : this code shows Manufacturers code.
22) *#7780# : this code Restores Factory Settings.
23) *#8110# : this code shows Software version for the Nokia 8110.
24) *#92702689# : this code displays Serial Number, Date Made, Purchase Date, Date of Last Repair and Transfer User Data.
25) *#94870345123456789# : this code deactivates the PWM-MEM.
26) **21*(Number)# : this code turns on “All Calls” divert to the Phone number entered.
27) **61*(Number)# : this code turns on “No Reply” divert to the Phone number entered.
28) **67*(Number)# : this code turns on “On Busy” divert to the Phone number entered.
29) *#7328748263373738# : this code resets the default security code.
30) 12345 : This is the Default Security Code.
