I had been using an LG G5, which worked perfectly. But after upgrading to the Oreo operating system the phone can no longer connect to the controller. This made me realize that using a drone with your everyday phone is a horrible idea. I'd like to have a phone that I only use for flying. I don't need it to do anything else. What phones do you all recommend? I don't want to spend more than $150, but also don't want Litchi to crash on it.