Here are 2 methods to take a screenshot on this device:
A. 1. Go to the screen that you want to capture. 2. Press and hold the power button+volume down button for few seconds. 3. A sound will be heard or you will get a notification that tells you that your image is captured and is saved in your gallery.
B. 1. Go to the notification area and you will find a screen shot icon. 2. Open the screen which you want to capture and click on that screen shot icon. Your screenshot image will be saved in your gallery.