Note : All secrets mentioned below have been tested working on Nokia 3310. Most (perhaps all !) of them, would work on the Nokia 3315 And Nokia 3330.

To See IMEI Number : Press *#06# in Idle mode.

Pressing *#0000# will take you to a special display which shows...
1. Software Version
2. Some Date (Most probably the date of software release)
3. ??

The x# Trick

By pressing x# (where x is any number upto 100) will show the telephone number stored in location x. For example, pressing 5# in idle mode will show the 5th number you stored when you entered the numbers in your phone-book.

Pressing *#92702689# will take you to a new menu with 6 options :
1. Serial Number Of Your Phone.
2. Month And Year Of Manufacture (In format MMYY).
3. Purchasing date. You can only set this once.
4. Enables phone for data transfer if you have all the necessary equipment.
5. Life Timer - ??

To exit the menu, switch off the phone and then back on.

Special Character Trick

While composing an SMS, you would often require to key in some special characters. The entire list of available characters is made available by pressing and holding the * key. Further, you can go down directly instead of going horizontally by pressing #.

Wake Me Up !

Some pre-paid card networks allow the option of "Balance On Screen" facility that displays the remaining credit and validity on the screen. When you go to sleep, set the alarm as usual and then return to idle mode. Now, request for a "balance on screen". Let the balance screen remain and you doze-off to sleep. When the alarm rings as per the set-time, every key will act as the "Snooze" key. The alarm will pause for a certain while but it won't stop ringing ! Eventually, you'll get frustrated and you'll get up ! Wow !