I've encountered a problem with my iPad 3 where it will never connect to the cellular network. The top left corner always says "searching". I've used the cellular data plan (AT&T) twice since purchasing the iPad (only when traveling). I bought a 3month plan back in October and it worked fine. I tried it in November and it worked fine. However, now it's suck on "Searching". AT&T did some troubleshooting with me and asked that I go into the store and replace the sim. I did that yesterday and that did not resolve the issue. I thought maybe I would try using the iPad in a different location and that didn't work. I did a complete restore and that also didn't work. Interestingly, I am sitting at the airport and tried again and noticed that it showed 1 dot (instead of "searching"). This lasted a few seconds and then reverted back to "Searching". I called AT&T and went through the troubleshooting again. They think that my first SIM card went bad and that I may have gotten a bad SIM card from AT&T. That's hard to believe, but I guess anything is possible. I'm curious as to if any of you have seen this problem before and if you have any suggestions on what to try. I've done the normal resetting of network settings and a full restore. I will be going back to AT&T tomorrow to replace the SIM card, but have a feeling they will send me to Apple. Not a bad thing, but I have no warranty left and have only used the cellular data plan 2 times. The iPad is in great shape, has always been in a case and has never been dropped so it seems silly to me I am having a problem. One thing to note is that I did upgrade to ios7 and did the updates over the past few months so the iPad is fully up to date.