After many hours of research I cannot find a clear, concise and easy to understand solution. I simply want to display an entire screen image and ensure the image I have uploaded conforms to the @1x, @2x and @3x format so the device will use the correct image.
I tried to wade through this answer iPhone 6 Plus resolution confusion: Xcode or Apple's website? for development but to no avail or understanding. Half the time the image is too big for the screen, the other time it's too small.
What size image do I load into @1x, @2x and @3x respectively to ensure the images fit correctly. Do I also have to alter the ppi?