Probably it is not the firmware for the NO signal or poor signal but nobody knows...I have experienced a poor signal with 1.8 firmware also......... Just a test flight in order to test the latest firmware 1.9 and also to see if there is any problem with the compass (last flight I received a compass error exist P…) Well I have received 2-3 times during flight a image transmission weak signal and also 1 for the remote. Everything was ok and I decided to test the maximum flight height. Again no issue and when received image weak I just pointed the control to the right position. During my descent and at about 400m height I experienced for the first time No signal and a blank screen on the DJI GO. This is the first time that I was facing such an error. DJI GO suggested RTH and I followed the proposal !. I entered into RTH but I was afraid that “that was it” I am also another person that lost his P3. During RTH I tried numerous time to restart the application but I was receiving no signal again. While I was in light panic and trying to reboot device in order to start the DJI GO I just heard the beautiful sound of the motors !!!!! Ok the P3 was descending above the home point so I thought that it may miss the home point and land on the tree next to me. I was ready to hand catch it (if I would have the chance) but I realized that the control was working I was able to navigate the aircraft no matter the NO SIGNAL on the DJI GO on the screen. So returned safely to home and I just performed a short test flight in order to see that everything was ok. In healthy drones I have seen from the flight log that I have a very poor signal during my flight but I do not know why. Firmware, hardware, application DJI GO ,,Summer Interference WHO KNOWS ????? why I have a poor signal in a area that I used to fly often. Tried to explain this to DJI ( 4 times round trip to service center for gimbal vibration ) but they told me that my P3 is thoroughly checked and the poor signal is interference.