Understanding the Android SDK tools like Monitor, UIAutomator
Now that you have registered your mobile phone with your system, it’s the time to play around with it using Android SDK tools.
The ultimate tool to know is Android device monitor. It is located in tools directory in your Android SDK. (e.g. D:\android\sdk\tools\Monitor.bat). Just double click on it and it will launch the Android Device Monitor as shown in below image.
Device monitor also allows you to take the screenshots from your mobile or view the applications internal element structure.
Below image shows how you can take screenshot of the mobile screen in device monitor.