RailTel, the telecom arm of the Indian Railways, on Friday launched free public Wi-Fi service at Mumbai Central station in collaboration with Google and plans to roll out this project to 100 stations across the country by this year-end.

"Affordable smartphones have made it possible for the common man to experience the power of Internet. With our partnership with Google, we are very confident of rolling out a robust, scalable service at railway stations in the near future," Railtel Chairman and Managing Director R K Bahuguna said in a statement.