The MBTA's holding a little ceremony at Ruggles this morning to announce that the entire Orange Line, including underground stations and tunnels, will be bathed in the soothing electronic aura of cell-phone coverage from AT&T and T-Mobile.

The T says Red Line riders south of Charles/MGH will get similar end-to-end coverage in May. Terminus-to-terminus service on the Blue and Green Lines is still in the design stage.

The T is also announcing a new public-safety campaign to tell people to be alert while using their smart phones to avoid having them stolen - the T says smart-phone thefts are up dramatically over last year (46 to date, compared to 27 during the same period last year). So listen for MBTA Police Chief Paul MacMillan soon on a loudspeaker near you.