I agree with msinger's suggestion...make sure your phone's USB port isn't set to 'charge this phone's.... that will prevent your phone from communicating with devices such as the remote controller. If your not familiar, swipe downward from the top of the screen while a USB cable is plugged in and you should see an option titled 'android system's with a USB icon next to it (this isn't visible unless you have a USB cable plugged in). For what it's worth...I have the S7 edge and had horrible luck staying connected...there were several times when the phone would disconnect from the RC while the drone was in flight (pretty nerve racking to say the least). I reluctantly switched over to my son's iPad 2 and it has been bullet proof...which sucks because I'm usually the guy who makes fun of Apple products.