I have an iPhon6+ running System 8.4.1. How do I go about taking a screen shot, and can I take a screen shot of any screen I am viewing? According to David Pogue's Missing Manual on the iPhone, all I need to do is hold down the Home button and while it is down, press the Sleep switch. The problem is that holding down the Home button brings up Siri. Either Pogue is wrong or I am not understanding something.