Unless it can win an appeal, AT&T will have to face the Federal Trade Commission's lawsuit over the carrier's phasing out of unlimited data. And the carrier won't be able to use the FCC's new net neutrality rules to escape it. Last year, the FTC sued AT&T, accusing the carrier of deceiving its customers and badly mishandling the move away from all-you-can-eat data. When the company did away with unlimited plans a few years ago, it promised that existing subscribers would be able to hold onto them. So far, that's been true; but AT&T also began throttling data speeds for users who tax its network most heavily, something the FTC hasn't been a fan of.