[LG Optimus 2x] rugglez:
MIUI tips and tricks:

Some cool tips and tricks to make your MIUI experience more fun and convenient. From the official site itself.

This is the link to the MIUI site from where i got these :D

1. Long press on the icon in Toggles will launch the settings for that icon.

2. Press "Menu" key and "Volume Down" key at the same time to take a screenshot quickly. The printed image is saved in the directory of MIUI in the sd card.

3. With 3-finger pinch, you may preview home screen thumbnails and add or move screens.

4. Slide from left to right to quickly delete a message or a call log.

5. You may hold down an icon by one hand to enter Edit Mode, and then use the other hand to slide the screen to move the icon to the target screen.

6. Your phone will vibrate when a call gets through.

7. Double tap the time zone or lock button to launch the Music Player when the screen is locked.

8. In the lockscreen, hold down the icon of Call or SMS, and you can enter the responding program.

9. Hold down Home key to quickly enable the torch when the screen is locked.

10. Click the contact image in Calls, SMS and Contacts, shortcut menus will pop up.

11. Long press on Search button will launch search via voice recognition.

12. Click menu in “System Update” to reboot and enter recovery.

13. The battery will display the percentage of left battery capacity by Settings>System>Battery>Notification Indicator Style>Percentage.

14. Long press on the Home button can go to “Program Manager”. Click the “Clear up” button at the bottom left to clear the extra processes in memory. And the system will inform you of the released memory and current available memory.

Note: System processes will not be cleared so as to ensure the normal running of the system.

15. How to set IP dialing?

MIUI ROM can add an IP prefix for the called number in a strange land. You may set it in Settings>Common>Calls.

You may also long press the contact item before dialing, and choose “Make IP calls” in the pop-up menu.

16. When you are not available to answer the phone, you may slide up the panel to reject the call and to send a message to the caller at the same time.

17. How to set custom ringtones?

Put media files into the Media/Audio/ringtones directory in the SD card, (If there is none of this directory, please create one manually) and then select in Sounds in Settings.

Note: there are three directories under Audio, corresponding to the following tones:

notifications--notification ringtones

ringtones--incoming call ringtones

alarms--alarming ringtones

Supported formats: MP3, WMA, WAV, Midi, etc.

18. As for those important messages you want to add to your favorites, you may long press the message in the pop-up menu and select "Favorites". You may switch to "Favorites" tab in the main SMS interface to view collected messages.

19. How to enable 720P to record a video?

Turn on Camera and switch to Video, select "High", and select "720P" in the pop-up menu of video quality.

20. How to quickly delete items?

You may slide from left to right on the item and click on the red "Delete" button when it appears.

21. How can I share my network to the PC or other terminals?

Firmware of Android 2.2 and above support the sharing of mobile phones to other Internet terminal in the following method:

Go to "Settings" -> "System" -> "Share mobile network", you may choose to share the Internet connection by USB tethering or setting up portable Wi-Fi hotspot.

Enjoy!