One thing I would like to see on my N810, N900 as well as all future cell phones, is a Wake On Power event.

It's not really a new idea as I have had it or similar (Wake on PME, Resume After Power Loss, etc) on several old motherboards.

My N810 already flashes a white Nokia logo when it receives power. At this point I would have liked it to boot. And I have yet not ever plugged in my cell phone when it's shut itself down, and wanted it to stay off. I usually want my phone turned on unless I've specifically turned it off myself. So, if my device preferences has a Wake On Power option, I would set it to 'yes'.

This is functionality I think should be included in all future cell phones, really.

As to why I want this functionality for my N810, the reason is I believe it would make it a better device for mounted car usage. I have written a complex use case here that would require Wake On Power functionality: http://talk.maemo.org/showthread.php?t=59369