New York City’s 53rd Street/Lexington Avenue subway station is littered with useless hulks of payphones abandoned by Pacific Telemanagement Services (PTS).
The Payphone Project asks PTS: Why did you even bother?

Since PTS acquired most of Verizon’s payphones the devices have languished, lingering like unplugged radios in abandoned houses.
It is virtually impossible to find a working payphone in most of New York City’s subways.

Only the most trafficked stations have working public pay stations.
If you need to make a phone call in the cell-phone-signalless lower levels of the 53rd Street Lexington Avenue Station then you are out of luck. None of these phones work.

The same is true for most of the city’s PTS-owned subway station payphones.
The average number of working public telephones at NYC’s subway stations is zero.
Thanks, PTS! (You are no AT&T).