FWIW, this is how the GoPro works with its iPhone app and Android app. It's so easy to set up that I decided to adopt it here. It is of course possible to con

FWIW, this is how the GoPro works with its iPhone app and Android app. It's so easy to set up that I decided to adopt it here. It is of course possible to connect the Pi and the phone to the same (existing) wifi network, but then you need to help the user figure out the right IP address to connect to. I messed around with zeroconf/bonjour for this before I settled on this simpler mechanism -> it works but is pretty temperamental. The other thing I have tried on Android is to have the phone create a wifi hotspot with the same SSID and password as my home network. When at home, the devices are all connected nicely, when away, the Pi connects to the phone and (modulo zeroconf being picky) the whole thing works well; couldn't get this to work with the iPhone.