Secret code to enter Service Menus of Sony Ericsson handphone

There is a secret code to enter the Service Menus of Sony Ericsson handphone. Different information might be shown in different model number. And here is the code... (warning: use it at your own risk! Don't do it if you feel uncomfortable to try!)

Enter the following sequence in Standby Screen.

For handphone with joystick or arrow keys:
1. Press the [right] key
2. Press the [*] key
3. Press the [left] key
4. Press the [left] key again
5. Press the [*] key
6. Press the [left] key
7. Press the [*] key

For handphone with jog dial:
1. Rotate jog dial up (just rotate a bit, don't make circular rotation)
2. Press the [*] key
3. Rotate jog dial down (just rotate a bit, don't make circular rotation)
4. Rotate jog dial down again
5. Press the [*] key
6. Rotate jog dial down
7. Press the [*] key

Here is what I get on the Service Menus of Sony Ericsson P1i:
1. Service Information

• Model information
• Software information
• Hardware information
• SIM locks
• Configuration

2. Service tests

• Display
• Camera
• Touch screen
• Illumination
• LED's
• Keyboard
• Vibrator
• Speakers
• Microphone
• FM radio
• Memory Stick

3. Format internal disk

• Are you sure you want to format your internal disk? (you should answer NO or else you might get into trouble)

You might probably want to play around with the Service Tests available to your handphone. It is a handy tool to check if the respective hardware portion of your handphone is functioning or not.

Disclaimer: I shall not be liable to any losses or damages if you intend to use the secret code mentioned in this article.