Comment Re:Opportunity Rocks (Score 1) 70
I used to have a Nokia phone (6320 IIRC, US model naming may be different) that lasted well over a week with one charge. Of course that dropped with the years, but it was still several days at the point when I replaced it.
I would imagine similar phones are readily available these days too.
Oh, did you want a phone with web browsing, GPS etc.? Those things drain a lot more power... Still, even for them, I imagine it would be possible to put some super-efficient batteries that would enable long-lasting battery life, for the price of merely a few dozens of thousands of dollars.