The phrase "phone voice" is correct and can be used in written English.
It refers to the specific tone and manner of speaking that a person uses when talking on the phone. This can sometimes be different from their regular speaking voice. Example: "Despite being nervous, Jane put on her best phone voice and confidently answered the call from the job interviewer."
Your phone voice was distinctive; your phone manner was distinctive.
I can still hear his anguished phone voice pestering me at all hours.
Victoria made herself available to her customers by home phone, office phone, voice mail, and beeper.
They allege that the tabloid ordered private investigator Glenn Mulcaire to hack into their mobile phone voice messages.
Phone voice services are also down across much of the north-east, although data services seemed to be working sporadically.
Lucid, expressive, a perfect sonic spectrum: in those days a friend's phone voice was as much the friend as was her body in physical space.
The two were "arrested on suspicion of unlawfully intercepting mobile phone voice-mail messages," according to a police statement, which did not name the reporters because they had not been charged.
In Afghanistan, one member of the Taliban shura, reached by phone, voiced scepticism about Bin Laden's death, while insisting that it would not matter anyway.
In Afghanistan, a member of the Taliban's ruling council, reached by phone, voiced skepticism about Bin Laden's death, while insisting that it would not matter anyway.
He traded his immaculate Saab convertible for a 1995 Civic when his wife, Annie, became pregnant, and he "got" people all the time with his silly phone voices.
British police launched an investigation in January 2011 into claims journalists at Murdoch's now defunct News of the World tabloid had been illegally accessing mobile phone voice-mail messages to find stories.
