I realize the OTG chatter has been going on for awhile, so I apologize if my question is answered in another thread. Is there any evidence that using WiFi with the spark is inferior for performance, not just inconvenient? I hear a lot of speculation about how a direct wired connection to the remote eliminates the variables of wifi connectivity and possible interference between wifi and radio controller signals (not sure if that is valid concern, sounds plausible but I'm not an expert). I think some are confused about the distance limitations of WiFi because they think WiFi is the connection to the Spark, but it is only used from the remote to the mobile device which remain right next to each other. It seems that everyone is working hard to find ways to make OTG work with mixed results because iOS and microUSB to lightning cable doesn't seem to be standardized or intended use and gives mixed results. I'm a newbie and still experimenting, but I've made WiFi work and OTG work, though with OTG connection Go4 app told me it thinks it is connecting to a Phantom 3 once and that I need to update firmware and most recently told me I need to update my camera firmware and showed two fuzzy white stripes in the camera view (which it does not complain about or give me stripes when I use WiFi). So, it seems that there is a lot of effort to make OTG work in an unsupported way. I haven't had any problems using WiFi (but haven't done distance tests either). Is there explicit, confirmed reason why WiFi is interfering with signal, impeding performance and OTG is the way to go?