Hi, I got p4 as a present last week. I've used it a few times with my crappy cell phone. At about 1/4 mile out the phone gets purple lines on the screen and I end up either flying blind, or get spotting screen updates. So I aborted the flights and returned to home. (getting a Samsung Galaxy Tab A 10.1) My question is : If the P4 loses complete contact with the remote, what happens? Is there a Fail Safe mode that has it return home, does it just hover until it dies, does it follow the last command and keep going until it dies? Just wondering what sort of safety features if any are encoded into the firmware. thanks!