Thanks. To enlarge on my issue, my version 2 controller keeps making buzzing noises, which according to the book are warnings of low batteries in the controller, but they were new ones and the phantom has only been in the air for 5 mins, then buzzing starts and she comes home on her own.
I've also got what I thought was the dreaded wifi module problem with no live feed from the camera, but this is spasmodic, sometimes it's fine, sometimes it's not. But, usually if all batteries are charged and new it works fine until the buzzing noise starts, then problems with feed. I'm suspecting the controller at the moment unless anyone can make any other suggestions?