Chosen Solution

Earlier today, I dropped my phone and a small card popped out of the phone. I didn’t see where it fell out so I restarted the phone, but now I have no signal. Did I break my phone, or do I need to take it into the AT&T store to have it reconnected to the cell network?

The sim card fell out of your phone. If you can’t find your sim card, contact AT&T for a new one. If that doesn’t work look at the troubleshooting page.