Hey guys, just got my Incredible today (first smart phone) and I'm loving it!

I read as far as battery life is concerned it's good to use WiFi over 3g so I have it connected to the WiFi at my apartment. In the settings though there's never off, never unless plugged in, and 15 minutes.

Am I right in assuming the never off unless plugged in option is the same as 15 minutes only it won't put the WiFI if it's plugged in? I figure this is the case but I wanted to make sure.

Thanks for any clarification!