Post here your tips and tricks for all the SE phones that you may know.
I'll try to put all the tricks in this first post so everyone can read it.

Rules for posting:

- Mention the Model Name (e.g. T610, K700i etc.)
- Mention how to do the trick
- Make sure the trick do works, if not mention on which firmware version it does

Me or the other mods will try to update this post as soon as possible

Tips And Tricks

Sony Ericsson F500i
Service Menu - >*<<*<*
Shows you hidden items

Silent Mode - "#" or "C"
Puts your phone quickly in Silent Mode or disables it

Camera Toggles
When using camera use press:
"1" For switching Resolution
"2" Turning NightMode on/off
"3" For Special Effects
"4" Self-Timer
"Joystick Up or Down" Zoom
"Volume Up/Down" Brightness adjust

Phone Status - Volume Key In Stand-By
This will show your phone status

Quick Menu - "C" in Stand-By
This will show-up a small menu with the options: Silent, Profiles and IR