Mobile secret codes? specialy for nokia 6600.?

[acertified18]

for the backup battery life.which enhance the battery life of nokia 6600 i tried *3370# but in vain no result

 

[seenjhon]

Hi., thanks for the sharing. its really a cool information, but i need some clarification regarding this. i recently unlocked my Nokia E 72 mobile phone using the unlock code from this site Mobile Unlocker - Unlock your phone at the most professional unlocking site! and now i would like to use the secret codes in my mobile. is it possible to use this codes in my mobile phone?