Siri cheat sheet shows how you can talk to your iPhone
 

Sure, iOS will give you a quick hint as to what you can ask Siri, but there's a lot more the voice control system will recognize. How do you know whether or not your command will work? You don't have to guess. Sandro Roth's recently launched Hey-S...

https://www.engadget.com/2016/08/03/...o-your-iphone/