To take a screenshot on an Android version 4.0 or above, click the Volume down button and the Power button simultaneously. If you are running Android version 2.3 or below, screenshot capability is not available through the operating system and can only be completed if the phone's hardware has the capability.Continue Reading
Tap the Home button, and select Menu on your Android phone. Tap on Settings, and then select About Phone. Tap on Software Information, and the operating system appears. If you are running version 4.0 or above, you can take screenshots. If you are not, you need to download third-party software that allows this functionality.
Exit out of the Settings menu by clicking the Home button. Navigate to the screen you want to capture.
Simultaneously click the Power button and the Volume down button. The screenshot is taken, and the image automatically appears in your Gallery app.