It is not as neatly done as on the iPhone
It's not often that I complain that an article is too short, but it doesn't explain at all why the android market isn't as neatly done as the iPhone app store. I've used both and I haven't noticed the android market being inferior.
In terms of the iPhone, my understanding is this: the WiFi system is only on when the phone is active (lit screen). Nothing ever wakes the iPhone by WiFi. I don't feel up for testing it because I'm not at home, but you can check this by trying to ping your phone when it is asleep.
Yep, I used to have a jail-broken iPhone, and in order to SSH into it I had to turn the screen on to enable WiFi. Once I had an active connection with it though, turning off the screen didn't kill the WiFi. I think it's the same with any background process - if the email app is updating, it will finish up even if the screen isn't on.
I've met plenty of women who love the jealousy and control.
I call those chicks "women I don't want to date."
"Experience has proved that some people indeed know everything." -- Russell Baker