I've browsed for this information and everything I've found says to hit the power button and volume down at the same time and a white line appears around the screen and you have a capture.
I've tried so many times and i just can't do this.
I can get blank the screen I can make the Power Off, Flight Mode, Restart dialog appear I can get the volume slider to appear I can even get the volume slider to appear and power off dialog to appear at the same time.
I've tried pressing both together, pressing one and then the other, Holding one down and pressing the other, holding both down. I even tried pushing my tab against the desk, edge on, to flatten both buttons at the same time.
And after 30 minutes I still can't seen to get any screenshots, but I have rebooted twice.
Is there some that works on voice or shake or hold on screen that would allow me to do this?