Blackberry Secret Codes keys

Displays your signal strength in decibels instead of bars.
Hold the "Alt" and press "N", "M", "L", "L" (repeat to reverse the effect)
Address Book file verification.
Check the data in your Address Book for inconsistencies.
In Address Book, hold "Alt" and press "V", "A", "L", "D" ..

Address Book rebuild the data structure.
Hold the "Alt" and press "T", "B", "L", "D" ..

See the source code.
Displays the Web page source code.
In the Browser, Press "Alt" and press "R", "B" "V", "S" ..

Help Me! the menu.
Provide important technical information about your device, because when looking for technical support or help in the forum ...
Hold the "Alt" and (left) "shift", then press "H" ..

IMEI screen.
Featuring internationally equipment for your mobile device identity (IMEI - your serial number) on the screen ... Also works from all the other GSM phones.
Type "*", "#", "0", "6", "#" on the Home screen ..

"Soft reset".
Conducting "soft reset" your device, (ie. Removing the battery for a few seconds).
Press-and-hold "Alt", then press-and-hold (left) "shift", then press-and-hold "Del" ..

Event Log.
Displays event logs all system-level activity that occurs on your device ...
Hold the "Alt" and press "L", "G", "L", "G" ..