Sony Ericsson secret codes

Secret menu / Software version: >*<<*<*

  > means press joystick or arrow keys to right
  < means press joystick or arrow keys to left
  1. push joy stick to RIGHT once
  2. press *
  3. push joy stick to LEFT twice
  4. press *
  5. push joy stick to LEFT once
  6. press * 

Reset Theme <0000>

Serial Number / IMEI: *#06#

Network Information <**<

Lock status: <- * * <-

Shortcut to last dialed numbers: 0#

Default Language: < 0 0 0 0 >

Shortcut to sim numbers: On main menu type a number and press #

Programming Checks: >*<<*<*> or >*<<*<*>

Phone Test: 904059 + > (to exit 3 + <)

Opening phone without a SIM card: **04*0000*0000*0000# followed by on 'Wrong Pin' number

Secret Games: Snake on the T68
  Go to Erix and then on the main screen press 123 and you will be taken to the game.

Secret Message:
  On Tetris on the main screen when the blocks are falling press 397 and a message will appear.

SECRET PRANK:

Change closed caller group (settings >security settings>user groups) to 00000 and your phone will sound the message tone when you are near a radar speed trap.
Setting it to 500 will cause your phone 2 set off security alarms at shop exits.
Try this secret trick if you can handle the unexpected.
Note: This secret trick wont work with all phones Models.

Here are some of hidden smilies for messages. You wont find them in "Add symbol"

1. :-]

2. :-[

3. :-*

4. [:]

5. :<^

6. ://

7. :&

8. :'(