San Francisco may have signed cellphone radiation labels into law, but the stickers won't stick without a fight -- the Cellular Telephone Industries Association (CTIA) just filed a complain in federal district court, claiming the new law supersedes the FCC's authority to regulate radio emissions and misleads consumers into believing some phones are safer than others. As we've discussed previously, the CTIA does have something of a point. Every phone that makes it to market is rigorously tested for cell phone radiation levels, and those that pass fall below a specific 1.6 watt per kilogram threshold already. But hey, we're all for bombarding our brains with that much less radiation, as long as our calls stay connected and our text messages arrive on time. If only there were a label for that... Read the CTIA's full complaint at our more coverage link.