I got cross & upset last night, trying to demonstrate an app at a user group meeting. First, I needed to connect the iPad to the wifi network so it could connect via AirPlay to the Apple TV connected via HDMI to the video projector. But the bastard thing wouldn't connect to the AirPort Express in the room despite the iPhone & the MacBook air connecting OK.
I explained clearly the name of the app & it was showing on the top left corner of the Finder window, nicely magnified FOR ALL TO SEE, yet people were still asking for its name.
I explained quite clearly what the app did, AND STILL PEOPLE WERE ASKING WHAT IT DID.
I use QuickTime X, select new movie & choose the iOS device as the camera & and then its display is mirrored to the projector along with the Mac's desktop in the background. The iOS thingie must be connected via USB for this to work, and the cable I had was not sustaining the connection. The iPad kept bonging as its charging process was interrupted because of the shit cable.
So I tried with the iPhone. For some ungodly reason, since Sierra, the iPhone won't show up on the screen in QuickTime, and QT itself crashes, totally defeating the exercise.
At that point I angrily gave up, shutting the Mac, asking for the next person in line to demonstrate their favourite app, then hurling the iPhone SE onto the carpeted floor and letting it crash into the timber shirting board & bouncing off the metal legs of several parked chairs, while telling it that it was a piece of useless junk.
Nothing went right with that presentation. NOT A FUCKING THING.