Hi, good people. I'm guessing that this has been covered, but I couldn't find the thread. i'm a teacher in australia, and I'm looking for a class set of phones or iPads to control a set of drones with. The ideal would be a set of outmoded phones/pads, as that would be easier than a bunch of second hand ones. The aussie dollar's gone down lately, and the recommended phones are far too expensive for me. What's the cheapest reliable option for me? It doesn't matter if the video or sound is inferior, the main thing is that my students can use them for coding and also for control. The phones will be operated without SIMs.