When we go to Mass, I turn my phone off and leave it in the car. Coming back out, I turned it on and saw the message: "Your data has been corrupted. To reset your phone, everything must be erased."
The phone is a Galaxy S3 that is 1 month from renewal. I pressed the reset button, expecting to have lost all my information. It took a while for it to recover and reload information from the cloud, but in the end, it looks like the only things I lost were all my text messages. That's not too bad for a catastrophic data failure.