The screenshot on the Cat S50 is like other smart phones also carried out by means of a key combination. This key combination is as follows:

Pressing and hold simultaneously for a period of two seconds:

Power On / Off button
Volume Down button

This will now trigger the screenshot on the Cat S50. You hear this on the basis of a click sounds and a white border around the screen content. If the screenshot with your Cat S50 was successful, then you can now find on your smartphone in the gallery, the image file.