This information is cut and pasted from this post by SAM the administrator of TRIVUz Network, of which many are found in the Nokia N95 reference manual, for my own use and reference. If I find any more I may need, they will be added to the list.
IMEI number (International Mobile Equipment Identity)
Firmware version and date, Phone Model and Operator Variant
*#92702689# (W A R 0 A N T Y)
Life timer – The amount of time your phone has spent sending and receiving calls.
*#62209526# (M A C _ W L A N)
Wireless MAC Address
*#2820# (B T A 0?)
Bluetooth MAC address
*#7370# (R E S 0 ?)
*#7780# (R S T 0 ?)
The factory reset comes in handy if you should ever find yourself a victim of the Curse-of-silence attack. See the advisory and technical details in this earlier post.
Also, I can really recommend the Nokia N95 page at Wikipedia, which includes full technical specifications, links and an overview of the different editions. I’m still at a loss as to why Nokia discarded the lens cover in later models.