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Our uberbrain (their word) friends over at Lifehacker found some ways to save precious cell phone battery life. The three they liked most? Kill the Bluetooth detection, set your screen for darker and most important/obvious of all, turn your cell off when not in use. But cool people might call me at any moment! They promised!

My best tip? Disable analog roaming completely. This won't matter to the city folk out there, but I've noticed that even when phones can find a weak but decent digital signal, they might default to a roaming instead. Just being connected to these networks seems to kill the battery, and talking on them is even worse.

7 tips [via Lifehacker]