In all the news and reviews of the MA2, one thing I haven't seen addressed is the potential of signal interference given the mobile device placement directly adjacent to the antenna.  This is purely speculative, but wouldn't there be a benefit to disabling both Wi-Fi and the cellular signals on your mobile device while using the controller?  A double entendre for your phone's "flight mode"?

Of course you can put your mobile to Airplane mode . The only problem will be the live map without wifi or data. Everything else works perfect

Also make sure no one stands between you and the drone.  Humans are big sacks of water and really block the signal.