Phone fell 2 feet onto concrete, now can't go into landscape

It fell out of my pocket when I bent over and dropped 2 feet onto concrete. It was naked and luckily there's only one very minor scratch right next to the visor (whew!) but now it seems my auto rotate doens't work. I double checked to make sure it wasn't from the locked rotation settings, and that's normal.

Any ideas? :/

EDIT: rebooted and now it works. Hopefully it's not going to happen again.

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