The phrase "a joint phone" is correct and usable in written English.
It can be used to refer to a phone that is shared or used collaboratively by multiple people, such as in a family or group setting.
Example: "We decided to get a joint phone for the family so that everyone can stay connected without needing their own individual devices."
Alternatives: "shared phone" or "communal phone".
"I'm not looking to get into the electricity business with traditional technology," he said in a joint phone interview with Mr. Sridhar from California early Wednesday.
"We approached it as problem solving: how to come up with an untricky way of doing dresses," Mr. Tagliapietra said in a joint phone interview.
"This has been one of the weirdest and strangest professional experiences of my life," Mr. Fontana said, in a joint phone interview with Ms. Hecht.
After a joint phone call today involving Germany's chancellor Angela Merkel, the French president Francois Hollande, Mr Poroshenko and Mr Putin, the four agreed to talks in Minsk which will aim to agree an immediate ceasefire.
Cameron broke the news to Clegg and Miliband in a joint phone call just before 10am and then staged a lightning Downing Street press conference to justify his decision.
In a joint phone interview on Tuesday, Sam Fell, the other director of "ParaNorman," about a boy who can communicate with ghosts, added that "quite often it's the stop-motion movies that are more out there," adding, "They're a little quirkier, they're a little harder to pin down".
Nokia and Siemens said they planned to begin operating a joint venture phone network on April 1, with both companies having agreed to increase net asset contributions.
Ware said Caldwell called him repeatedly to talk up Central Florida, traveled to Atlanta to meet with his family and even arranged joint phone conversations with the university's basketball coach, Donnie Jones, and his staff — contact prohibited by the N.C.A.A. "He was pushing for U.C.F.," Ware said of Caldwell in a telephone interview Thursday.
And the beautiful singer's joint phone interview with Duhks founder, frontman and clawhammer banjo player Leonard Podolak was equally compelling, totaling more than 90 minutes as Havey, who left the group in 2007, continued to chat long after her musical mentor departed.
Lastly, Ericsson of Sweden, the world's third-biggest maker of mobile handsets, announced a joint mobile-phone venture with Sony.
Past this man outside a pub smoking a joint, on the phone to his bookie?
