if you were to use your phone for 2hrs straight, say playing a game, or surfing the web, what would you say the phone says your display usage is after that time?auto.
choosing a setting drives me nuts. there's nothing more frustrating than having it at its lowest setting, in bright sunlight, and then trying to figure out where on the screen will turn the brightness back up.
auto ftw.
Auto is a nice feature but you will see it eat more battery life up. Albeit i'm not saying it will be like OMG BATTERY DEAD. But it does make a difference. I set mine to 25% and it seems to work fine, even when i had it set at 35%-40% i could see it more then well enough in the sunlight, at 25% sometimes it's alittle harder.
i know with auto, it's the top-most resource in the list, but it's barely aboe 20% and rarely above 30%.