What’s your smartphone doing in the background?

Fascinating analysis of what goes on in the background on an iPhone or iPad as you listen to the radio or open a few (mostly Australian) apps — both in terms of bandwidth wastage, privacy and security: Secret iOS business; what you don’t know about your apps

Not that I’d expect Android to be much better; it’s all in the hands of the web/app authors, after all.

(via Kornelis)