I thought it was just US Cellular. That would explain why I have been able to send text messages recently with my Verizon phone. In the past, the messages wouldn't go until the train would come out of the hole in the ground. At any rate, it is very annoying. The train is loud enough, expecially in the subway, but when you also have to listen to someone shout on the phone in order to hear themselves, it is particularly obnoxious. I'm hoping CTA is getting some decent money out of it, at least.