To check the IMEI (International Mobile Equipment Identity) type: *#06#
Information you get from the IMEI:
XXXXXX XX XXXXXX X
TAC FAC SNR SP
TAC = Type Approval Code (first 2 digits = country code).
FAC = Final Assembly Code (For Nokia phones FAC=10).
SNR = Serial Number.
SP = Spare (always SP=0).
To check the phone's software (firmware revision information) type: *#0000# ( or for some phones outher then Nokia 61XX you can try *#model nummber# ex. for 8110 *#8110#)
Information you can get from the phone's software version:
1st line: Software version.
2nd line: The date of the software release.
3nd line: Phone type, .
Some versions and dates:
V 3.14 28/11/97
V 4.73 22/04/98
V 5.24 14/9/98