Nokia Secret Codes:
1. *#0000# or *#9999# : Displays your phones software version.
2. *#06# : Checking the International Mobile Equipment Identity (IMEI Number).
3. *#92702689# : Shows serial number, month and year of manufacture, purchasing date.
4. *#7780# : Default factory settings -Original phone setting (PIN code:12345).
5. *#7370# : Soft format - erases all telephone memory (PIN code 12345).
Warning: Before you do reset the phone, make sure that you don’t have important data. Your data on the phone memory will be lost once you reset it.
6. Switching off the phone then press and hold Call key (Green key) + * key + 3 key + power button for a couple of seconds : Hard reset the phone (similar to #*7370#) when the phone cannot reboot.
NOTE: Code depends on phone model.
