CTIA is no longer holding its conventions in the city by the bay because it had a law that required cell phone sellers to post signs warning of the risks of the phone's radiation. San Francisco will not enforce radiation cell phone warning signs after a lawsuit was filed by CTIA.
The San Francisco Board of Supervisors voted to accept a permanent injunction against the right-to-know cell phone law that would warn buyers of cell phones that could cause cancer. CTIA proposed that warning placards would "confuse" consumers.