California state regulators have been working on a plan to charge mobile phone users a text messaging fee intended to fund programs that make phone service accessible to the low-income residents, reports said Tuesday. The California Public Utilities Commission is scheduled to vote on the proposal next month, but critics have already come out against the scheme, the San Jose Mercury Newsreported. “It’s a dumb idea,” Jim Wunderman, president of the Bay Area Council business group, told the paper.