Yeah that's tricky to do in your pocket though. If you take out your phone and hastily do something like that you're gonna activate "I have something to hide" s

Yeah that's tricky to do in your pocket though. If you take out your phone and hastily do something like that you're gonna activate "I have something to hide" suspicions. But as another commenter pointed out you can hold the power button for a longer time (5+ seconds) and the phone will turn off or reboot, which achieves the same thing. Just quicker and stealthier on the iPhone.