turn on

iPhone "Slide for Emergency" and "Activated" error messages

I'm not sure what I keep doing, but every once in a while when I turn on my iPhone 3G (after turning it off completely, i.e., a restart/reboot) I see a couple of different weird "error" messages. The first error message says, "Slide for emergency", and looks like this:

How to control your music without unlocking your iPhone

I just learned by accident today how to control the iPod portion of your iPhone without turning the iPhone on. With your iPhone off, just double-click the Home button, and a visual control comes on screen that lets you play, pause, fast-forward, rewind, and control the volume of your iPod music, with no need to slide the unlock bar on your iPhone.