Both carriers claim that requiring them to unlock customers’ mobile phones within 60 days of activation will mean fewer deals on subsidized phones.

The FCC wants all phones to be unlocked after 60 days. Two major mobile carriers do not, but Verizon isn't one of them. Here are their arguments.

Network carriers T-Mobile and AT&T released their response to the rule this week. The proposal would require carriers to unlock phones with 60 days of activation, even if under contract and not paid off.

Mobile carriers argue that locking devices helps them lower costs. Consumer protection groups see it a little differently.

Gee, I sure love paying for a phone that can’t be moved from my draconian cell phone network,” said no one ever. But that appears to be the sentiment echoed by American networks AT&T and T-Mobile in response to the Federal Communications Commission (FCC).