I forget the particulars of it, and wikipedia isn't helping me remember, but once upon I did some work for an important player in the mobile phone technology market, and it was hammered into us that essentially none of us have "cell" phones. To them--this particular technology client--modern mobile phone technology is distinct from traditional "cell" technology. But in the U.S. we routinely call our phones cell phones. Anyway, this client of ours made a point to get us to say "mobile" phones. To this day I mostly call my phone a mobile phone, but in the U.S. this remains an uphill battle. I think a better way to say it is that the battle is lost: in the U.S. we all have cell phones (even if none of us do).
