I agree with posters above re: invert colors.
I use invert colors daily, sometimes when it's not even that dark, in apps like messages, mail... whenever I'm viewing a lot of text on a white background.
While it's annoying that it inverts graphics too, it's a nice trick that avoids straining your eyes.
I highly recommend it. Hopefully soon Apple will allow an option to invert the screen without inverting graphics. I'd probably keep my iPhone in that mode all the time.
I use invert colors daily, sometimes when it's not even that dark, in apps like messages, mail... whenever I'm viewing a lot of text on a white background.
While it's annoying that it inverts graphics too, it's a nice trick that avoids straining your eyes.
I highly recommend it. Hopefully soon Apple will allow an option to invert the screen without inverting graphics. I'd probably keep my iPhone in that mode all the time.