You can made use of the Flash Light on your Omnia as a Torch. It will provide a simple lighting system for you if you do not have sufficient light in your environment. This is a useful tool which is present on most Sony Ericsson K Series Cybershot Phone.
How to ON the flash Light?
1.Go to Settings > Personal > Buttons > Flash Light tab at bottom
2. Tick the Press Volume key long on Today screen to turn on Flash Light
3. Press OK to save the Settings
You may now press and hold the Volume Key for a 2 secs and the Flash Light will turn on for you to use as a Torch. To off the light just hold the Volume Key for 2 secs and the Flash Light will be off.
Pls note that you must use the Volume Down Key to trigger the light as shown in the picture in the Button Flash Light Tab.
