NEW YORK (AP) — New York City’s sprawling subway system will be fully wired for cellphone and Wi-Fi service within about 10 years under a plan approved by transit officials this week.

Riders will be able to use their phones throughout the 418 miles of subway tunnels under the plan approved by Metropolitan Transportation Authority board members Wednesday.

The $600 million project will be built by Transit Wireless. That’s the telecommunications company that already provides cellphone service in the city’s 281 underground subway stations.

Subway riders can now use their phones in underground stations now but usually lose service once the train starts moving.