Today one of the buttons on my phone stopped working. The phone was on silent, so I didn't hear it ring. It vibrated itself straight off a pile of papers and over the edge of the table. When I picked it up, the button didn't work. I pushed it hard, but nothing. I turned it off and on, but nothing. I removed the battery and gently put it back into place, but nothing. Then I threw the phone at the floor, and the screen went black. I pushed the power button. It took longer than usual to start back up. The hourglass glared at me. And then it was fine. Everything worked.

If it tries that again I'm throwing it harder. That'll show it.