Im currently using Samsung Note4 running 4.4.4. Now using the OTB USB cable connect to the remote control and the signal was much more better than WiFi. But there is a issue that frustrate me soo much. The problem was if I use gesture control with active track enabled. The signal will be lost after i took several photos in a short period, RTH will be trigger afterwards. Although signal lost message and RTH message prompt up but I can still control the Spark. All I can only do was either land it manually, or unplug and then replug the USB cable and the connection will be back. I can reproduce the symptoms every time I use these features at the same time. Can DJI look into this issue and fix it for the upcoming firmware upgrade. Now I cannot enable active tracker during guesture control. Thanks Ricky

Im currently using Samsung Note4 running 4.4.4. Now using the OTB USB cable connect to the remote control and the signal was much more better than WiFi. But there is a issue that frustrate me soo much. The problem was if I use gesture control with active track enabled. The signal will be lost after i took several photos in a short period, RTH will be trigger afterwards. Although signal lost message and RTH message prompt up but I can still control the Spark. All I can only do was either land it manually, or unplug and then replug the USB cable and the connection will be back. I can reproduce the symptoms every time I use these features at the same time. Can DJI look into this issue and fix it for the upcoming firmware upgrade. Now I cannot enable active tracker during guesture control. Thanks Ricky