My Phantom Four suddenly has photos that look like they were shot through a screen. The image is still visible but the fringe area is now purple and the center screened.
That looks bad.
It's not something that you could have done by accidentally messing up the settings.
You could try resetting the camera in the app settings.
That won't hurt anything, but I suspect it won't fix the problem either.
I have a hunch that it's a problem with the black ribbon cable that connects the camera to the gimbal.
I haven't seen them produce a screen quite like that.
Usually when they go, you get a matrix of fine dots.
If it's the cable, replacing it would fix it.