Maybe I'm crazy to say this but surely Apple would do this for you.
Make sure the screen is set to the correct white balance then you have the olio to change rather than having to do something to it.
My iPhone screen is perfect, lol, well to me.
Make sure the screen is set to the correct white balance then you have the olio to change rather than having to do something to it.
My iPhone screen is perfect, lol, well to me.