Well due to the type of screen the GBA uses, it must be SIDELIT. The screen is a reflective screen, and so it looks best with the most light. This is why you can see it out in the sun. These lights ...

And here you were, thinking how much better the Gameboy Advance SP was over the good ol' GBA. Good god, how wrong you were. Didn't you know that the GBA can interface with Neo-Geo controllers, a PSOne ...