I have flashed CM 12.1 a few different times and ways. I have flashed the Resurrection Remix once. I keep coming up with a signal bar with a "!" In it on CM 12.1 I also ended up with a no sim and blank signal bar on remix. I do set the APN to fast metro. Ive tried everything i can think of. Im going to download a KitKat rom and a 5.0 rom and see if problem still persists. Is there something i am missing in the threads? Any help at all would be greatly appreciated.