andriod classic tricks and tips

Note: These tips and tricks work best with Android 4.0 on Galaxy Nexus. Some steps here may differ from your Android system if it is of a previous version or has been modified by thedevice supplier.
How to Switch between Open AppsWhen running an app, you can minimize it by simply tapping the Home icon . Getting back to it is not just one click on the taskbar like the way you do in Windows. But the Android way is pretty straightforward too.

1. Tap the Recent Apps icon to reveal the apps that you recently opened. (Note 2)

2. Slide down to see more recent apps.

3. Tap a screenshot from the list to instantly switch to theapp.

Note 1: You can clear the recent apps from the list by swiping them sideways one byone.

Note 2: On Android 2.x, touch and hold the Home button to reveal recent apps.

How to Close a Running App
The Android system doesn't need you to close a running app for every instance. But insome cases you may need to force stop an app that's misbehaving, or like playing agame, you may need to actually close the app in order to start a new level rather than continuing the last. Here are the steps to follow:

1. Run the Settings app and tap Apps under DEVICE.

2. Select the app you want to close.

3. Tap the 'Force stop' button and tap 'OK' to confirm.

How to Set and Clear a Default App
In Android, you can set a file to open with a certain program by default as you do in Windows. For example, if you have installed an image viewer such as QuickPic, the system will ask you to select an app when you try to open an image file.
To set a default app to open the file, check 'Use by default for this action' before you tap that app.
The next time you tap an image file, it will always open with the app you've selected without asking you again.
What if you need to clear the default app?

1. Run the Settings app and tap Apps under DEVICE.

2. Choose the app you do not want to launch by default.

3. Tap 'Clear defaults' under LAUNCH BY DEFAULT.

How to Uninstall an App
Installing apps from the Google Play store to your Android device is convenient, likewise removing them is pretty straightforward.

1. Tap the All Apps icon onthe tray and select the Appstab on the top.

2. Touch and hold the icon of the app you want to uninstall.

3. Drag and drop the app icon over the Uninstall icon then tap 'OK' to confirm. (The Uninstall icon appears only for the app that can be uninstalled from the system.)

Alternatively, you can run theSettings app, tap Apps under DEVICE then select the app you want to uninstall from the list

How to Add and Remove Icons from Home Screens
When you install an app, the system often adds an app icon on your home screen. This icon works as a shortcutto run the app. In case you need to manually add an app icon or a widget icon yourself,it's pretty easy.

1. Tap the All Apps icon onthe tray.

2. Select the Apps or Widgets tab on the top.

3. Touch and hold the icon you want to create a shortcut.

4. Drag and drop the icon on a home screen you like.

To remove an icon from your home screen:

1. Touch and hold the icon of apps, widgets or shortcuts until the Remove icon appears on the top.

2. Drag and drop the icon overthe Remove icon.

Note: On Android 2.x, you canadd a shortcut icon by touching and holding an emptylocation of a home screen or press Menu then tap 'Add'; OnAndroid 3.0, touch the customize button at the top right of a home screen to add a shortcut icon.