Screenshots while on the phone

[AC Question]

Just got the new S4, while i'm speaking on the phone it constantly takes screenshots! has anyone else had this issue?
just wondering if i can turn this feature off?

 

[STARGATE]

If this happens while your face touches the screen, your phone's sensor might be faulty.

Unless you are using the phone away enough to still have the display on and somehow move your face in a way that it'll take a screenshot. It is really difficult for me to recreate, so I'm not sure how you do it.

Anyway, go to
Settings
Motions and Gestures
Turn off the feature called Palm swipe to capture.