Unable to take screenshot on Samsung Galaxy S7

If I swipe with the edge of a palm, it is very unreliable -- sometimes screen is pressed and I do some operations instead of screen shot. Pressing Home + Power simultaneously doesn't work. What else can be done? **UPDATE** I am trying to take screenshow of an application, which I am debugging. When I run debug, it requests to close device monitor, so the third way of taking screenshots via device monitor also doesn't work. **UPDATE 2** Disabling swipe didn't help. Now it is impossible to take screenshot from within device at all.