I was flying in ground station today and several times it said connection lost, signal lost, "could not connect to ground station. Retry?" Each time it did continue on its mission and come home and I would eventually regain signal. At one point when it got home it just hovered for about 30 seconds and would not let me regain control. I thought I saw the LEDS flash yellow at this point but can not be 100% sure. Signal loss has happened to me in just regular flight as well. I keep the point of antenna and wifi extender pointed towards my Phantom. I am not using the latest version of the app. I had installed it but was having problems with the camera crashing so I reinstalled the one before the latest one.