Ok, so the weirdest thing has been happening ever since I came to AOKP (also happened on Fenny's, too). Randomly, instead of saying AT&T on the lockscreen or in the Notification area, it would show T-Mobile, then later change back. I'm not sure if other people have seen this and asked about it or whatever, but it never happened on UnNamed or Binnacle. Here's some proof:
http://imgur.com/a/LtNcZ
Edit: Just realized that it might sound like I'm trolling and just putting a T-Mobile SIM in my phone. I'm not--I would record proof when it's happening and show the AT&T SIM in the back while it happens but it only seems to happen when I'm at school and I'm not able to record anything at that point.
the power of christ compels you...