But not a Kindle.
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A Kindle is a reflective screen…it uses the sunlight to make the image. When the sun gets brighter it gets brighter, just like a piece of paper.
A mobile phone screen is back-lit…there’s a light (well, a whole bunch of tiny lights) behind the screen that light it up. They’re pretty powerful in normal indoor lighting but nowhere near as powerful as bright sunlight. When you’re in sunlight your eyes adjust to the brightness and your screen just can’t keep up, so it looks dim.
Because a mobile phone screen makes images by emitting light, but it cannot compete with sunlight. If the ambient light is brighter than the light the screen can produce, then the screen is hard to see.
The best color display I ever had was a Sony Clie PDA. It was a color LCD, easy to read in full sun (actually the brighter the ambient light, the better) and in dim light or darkness the backlight was excellent and evenly distributed. It made me wish all mobile phones used such displays.
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