I'd be curious why you'd recommend an AppleTV over a lightning-HDMI adapter. When we demo our iPad apps the direct connection is perfect. Spotty, shared wifi can hurt Airplay sometimes (and yes, it is awful that it uses a Wifi connection...)
"Do Not Disturb" mode only mutes notifications while the iPhone's screen is locked. The text on the DnD settings page in iOS specifically says "When Do Not Disturb is enabled calls and alerts that arrive WHILE LOCKED will be silenced, and a moon icon will appear in the status bar" (emphasis mine)[1].<p>I've been bitten by this during a demo: I still received texts (from a co-worker) even though I had DnD enabled.<p>[1] <a href="http://support.apple.com/kb/HT5463" rel="nofollow">http://support.apple.com/kb/HT5463</a>
If you put the phone in airplane mode as the article suggests, I doubt AirPlay to the AppleTV would work because it needs the Wifi radio that would be turned off at that point.
I wonder if the Apple TV hardware supports AirDrop/WiFi Direct (I know the software currently doesn't) so that you wouldn't even need to have the two devices on a WiFi network for them to see each other over AirPlay.
I don't think using your personal phone as a presentation device is the best idea, you can avoid most of those issues by simply having another device to present your app on, a used iPhone, or even iPod will be very cheap to get, no one will see that hardware anyway.<p>This way you'll avoid the wallpaper, calls, browser history, airplane mode, etc.. it'll be basically always configured for presentation mode, and you can also use it for development and as a backup phone !, fuck me right ?! :D