Talk to Android and tell it what to do for you! Here's how....

While voice activated controls are nothing new to smart phones, Android has the most efficient and accurate voice controls of any modern smart phone UI. Not only can you access voice controls from the Android home screen, speech-to-text is available anywhere the virtual keyboard appears.
To have speech to search available on your home screen, add the Google Search Widget and tap on the Microphone icon.

For speech-to-text, navigate to an area where text is entered using the virtual keyboard. For example, enter the Messages app by tapping its icon.