If you are using the Samsung Galaxy S8 Edge as your primary phone, then you will want to be able to screenshot on the device. This is because the phone has a great screenshot feature that is perfect for taking quick screenshots of important documents or photos. To take a screenshot on the Samsung Galaxy S8 Edge, first open up your camera app and press and hold down the power button until you see a screen that says “Screenshot.” Then release the power button and take a screenshot of what you want to capture.