APRS Coverage
Don't know
Voice Cellular Coverage
Decent, workable
Data Cellular Coverage
Decent, workable
Cellular Provider
AT&T

There has always been a locked gate about .5 miles from the summit (Radio Site Towers) that you could park at the gate and hike up to the summit (See N7CNH report on Buck Mountain and Tom, Mount).  However, it has now been Posted as No Trespassing (by both Weyerhaeuser and American Tower).