I've taken to telling people the only relevant advice is "f8 and Be There". And then I have to explain what f8 is..... **sigh**

Yes. I agree completely. My new phone has a bit of lag, but it focusses where you touch the image, and overall from "activate wonder photographer powers" to getting the image it's no worse than fumbling a lens cap off, zooming, acquiring pre-focus, and getting the image. And it's always in my pocket! It's the metering and focus details that annoy me sometimes.