Nokia Secret Tricks

I have searched on internet and found some useful Nokia Secret Tricks so sharing with you guys :)

On the main screen type *#92702689# [*#war0anty#] It will take you to a secret menu where you may find some of the information below:

1. Displays Serial Number.
2. Displays the Month and Year of Manufacture
3. Displays (if there) the date where the phone was purchased (MMYY)
4. Displays the date of the last repair - if found (0000)
5. Shows life timer of phone (time passes since last start)

To Restore Factory Settings for Nokia mobile type *#7780# reset to factory settings.

Taking picture without getting noticed.

Turn on/off the "click" sound made by the camera by selecting the 'Silent' profile or by turning warning tones on/off.

Speed Dialing From Simcard contact (not stored in mobile phonebook)
Type number followed by # then call i.e. 1# or 2# or 21#