The secret code of BlackBerry

When I previously discussed the secret code of the Iphone, so now I want to give some secret code of the Blackberry, Here's the secret code:
Decibel meter
Displays your signal strength in decibels, instead of bars.
Hold "Alt" and press "N", "M", "L", "L" (repeat to reverse the effect).

Address Book file verification
Checks the data in your Address Book for inconsistencies.
In the Address Book, hold "Alt" and press "V", "A", "L", "D".

Address Book data structure rebuild
Forces a data structure re-build in the Address Book...
In the Address Book, hold "Alt" and press "R", "B", "L", "D".

View source code
Displays the source code of a Web page.
In the Browser, hold "Alt" and press "R", "B", "V", "S".

Help Me! menu
Provides crucial technical information about your device, for when seeking technical support or help in forums...
Hold "Alt" and (left) "shift", then press "H".
IMEI display.
Displays your device's international mobile equipment identity (IMEI - your serial number) on-screen... Also works from all other GSM handsets.
Type "*", "#", "0", "6", "#" on the Home screen.

"Soft" reset
Performs a "soft" reset of your device; the equivalent of doing a "battery pull" (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 of all the system-level events that occur on your device...
Hold "Alt" and press "L", "G", "L", "G".

All of these secrets have been tested on the BlackBerry 8800 and BlackBerry Curve 8300.

In some cases, you will need to be on the Home screen when you enter these codes
Key shortcuts:
A or C = phonebook
S = search
F = phone profiles
W or B = browser
H = help
K = locks the keys
L = calendar
V = messages
M = messages folder
R = alarm
T = tasks
U = calculator
I = applications
O = options
P = phone
T - Top of page (in browser)
B - Bottom of page (in browser)
Space - Page down (in browser)
ALT + Right Shift + Del = hard reset
D - Memo pad
U - Switch between hide/unhide in title bar (in browser)
ALT + NMLL = numbers instead of bars for signal strength