My data and connectivity indicator keeps showing as not connected or no data, which is why I exchanged the first one. I thought it was dropping, and it would take a reboot to get it back. This one, I've found, is doing the same thing, but I was looking at a no-signal indicator and the phone rang. So, after I finished the call, I tried data, and it was working fine.
I think there is something wrong with the code for the signal icon.