Have very similar issues with the Controller, but even stranger is the drone is a work drone with multiple users, I had been using for 12 months or more, but the last time I took it to a site, my phone would not connect to the controller and the wifi was not connecting, I reset the drone wifi and am able to connect to the drone without the controller, but no connection with the controller is possible. I was wondering if it was a USB cable issue, but a colleague using a newer iphone plugged in and flew with no problem, he didn't even have an issue with the wi-fi password being changed after the reset, how is that possible?