I have, to date, had zero trouble using my N1 phone anywhere yet.  Two key points:<p>1) It's winter in New York City.  Even outside there's not a lot of really bright sunlight.<p>2) The N1 has a feature (which I like) whereby, with a light sensor, it adjusts the brightness of the screen to compensate for ambient light automatically.  Or: readable in light, not blinding at night.