I have been flying for the past couple of days with my relatively new MM. I am new to this hobby as well. Here is my problem, when I begin to reach 1,400' to 2,000' away from my home point at say, 200' to 300' AGL, I begin to experience a weak signal warning. On two occasions now, my iPhone 6S screen has gone completely black several seconds after receiving the warning which is unnerving to say the least. On one occasion, the RTH function was activated. I live in the mountains if that would make a difference. Is there anything that I can do to improve my range? Or, am I doing something wrong? Based on what I have seen in reviews, the MM should be able to reach at least a mile without any problems. Thank you all!