[shahzadk007]

The standard signal strength display on a BlackBerry uses the familiar “five bars” graphic — the more bars you have, the better your signal strength. If you prefer more precision, however, you can have the signal strength display in actual numbers in decibels (dbs).
To change your signal strength display:
1. Go to the home Applications screen and hold down the ALT key while entering the key sequence NMLL.
2. To return to the standard graphical bar display, enter the same key sequence, ALT+NMLL.

Please keep on posting such interesting Shortcuts and continue the chain.