Take a Touch-free Screenshot
Your screen is up for grabs, so take hold of it, by capturing a screenshot with an intuitive gesture. Sounds like magic, right?
Set it up
Open Settings, go to , and enable Grabshot.
Try it out
Make sure your phone screen is on, place your hand half an arm's length
away from the screen, and wait for the 
icon to appear. Then close your fist to capture a screenshot,
which will save directly in Gallery.