Here’s a life-changing tip for iPhone owners from physics professor Richard Muller:

Dear David,

One feature I really miss on my iPhone is a feature of my old cellphone: “vibrate THEN ring.” I like to sit in a meeting and feel the vibration, get up and leave with nobody knowing why. But sometimes I am walking or otherwise active, and I don’t feel the vibrate; sometimes I have left the phone recharging, and I don’t feel the vibrate. So what I really miss is 10 seconds of vibration followed by a loud ring.

read it here pogue.blogs.nytimes.com