The CTIA on Friday sued the city of San Francisco in a bid to stop a mandatory radiation warning law. The carrier-run organization claims that the city is overstepping its boundaries and that only the FCC has the "exclusive and comprehensive" authority to determine how radiation is displayed. The CTIA insisted that San Francisco's decision to show the SAR radiation levels for all phones was misleading, as it gave the impression certain phones were safer without definitive scientific proof.
