Spare a thought for those poor iPhoners that woke up recently to the unveiling of the 3GS. Imagine you’ve got the sleekest piece of hardware on the market and then there’s another, better, faster one, with 3 megapix video cam, a landscape fix of the really annoying keyboard, and “2x” the browsing power. Worse still, there’s that S, which stands for Speed, and makes you feel about as inadequate as not having ‘Turbo’ on the back of your black Porsche 911. Which is now a Mazda. And let’s not even talk about the $499 to upgrade, when any old Joe ...