Siri to lock screen and take screenshot? Apparently, the power button has become pretty insensitive in my iPhone 5. When I say "lock screen" or "take screenshot", I want that iPhone does such activity. Now when I say them, iPhone just googles them that is very stupid. So how can I make Siri to lock screen, screenshot and hopefully other things?
Currently Siri can't do these actions. 

One possibility is to enable assistiveTouch : 


Settings
General
Accessibility
AssistiveTouch 




On the assistive touch button : 


Device > next > screenshoot. 
Device > next > lock screen