For what it's worth, I had the dropout problem on my second unit, in my friends aircraft last week, and on the ground. My Iphone (tester)also seemed to take a long time to get an IP address from PilotAware, quite a few seconds longer than my other unit. We thought it was probably the Wi-Fi dongle, so I replaced it earlier this week with a new one, and in testing on the ground Skydemon got an IP much quicker, and no more dropouts.