
And you’ll need to find them all for 100-percent completion of Japan.
With the near total dominance of smartphones in Japan, like in many societies, the noble pay phone has become a dying breed. Although still used by ghosts and obsessive retirees, their numbers have been rapidly dwindling, making them rarer and rarer.
And among these increasingly scarce beasts are the legendary double pay phones or “Duet Phones” as they’re called. These phones are so rare that most Japanese people aren’t aware of their existence and usually take to social media after stumbling upon one.
▼ “In front of the Nakahara Ward Office in Kawasaki there is a Duet Phone public phone that lets three people talk at the same time. The idea of three people communicating is interesting!!”
川崎市の中原区役所の前に三人で同時に通話が出来る公衆電話「デュエットフォン」あります。
— 川崎シビックパワーバトル (@Kawasaki_CPB) July 9, 2018
3人で通話という発想が面白い!!#川崎市 #中原区 #トマソン pic.twitter.com/GqWu0i9R9Y
The reaction of other Twitter users shows just how unfamiliar these mutant devices are in the Japanese landscape.
“There are two handsets!!”
“I have never seen a phone like that.”
“Oh, that looks really useful.”
“I wonder if it’s meant for a mother and child to talk with the father who’s working out of town…”
“Even if I had my smartphone, I would want to try that.”
“Which handset are you supposed to use?”
“I live in the same city and had no idea that phone existed.”
It’s easy to dismiss these sightings as some sort of hoax or art installation, rather than an official public phone installed by NTT, Japan’s privatized telecom company that oversees most pay phones in the country.
To find out, J-Town Net asked NTT about the existence and use of Duet Phones. A rep for the company said that an undisclosed number of these phones had been set up to celebrate the 100th anniversary of their use in Japan. Since they are managed regionally, the rep could only vouch for the existence of one at the Nakahara Ward Office in Kawasaki City shown in the tweet above.
▼ Googling “Duet Phone” in Japanese (デュエットホン) will also pinpoint this particular unit. It’s hard to see but it’s inside the fake tree.
However, it is certainly not the only Duet Phone in Japan. The NTT rep couldn’t confirm how many of these phones were originally installed or still in use around the country, but a blogger named Mikkii found two others from various other tweets.
One is in a booth at The Historical Site of The Martrydom of Hidden Christians located deep in the mountainous Otome Pass in Tsuwano Town, Shimane Prefecture.
Another is inside a small log shed outside a government office in Kanonji City, Kagawa Prefecture.
For years, it has been written that these are the only three Duet Phones in Japan. However, recently another one in Mustu City, Aomori Prefecture, just outside a Maeda shopping center, has been shown to exist.
Another one was reported in Yamaguchi Prefecture hiding right behind an ordinary pay phone outside the Shunan City Museum of Art & History.
This brings us to at least five confirmed existing Duet Phones with a high potential for more. In the past, TV shows have done segments on these machines and estimates have ranged from seven to 20 across the country, but the true number is still unclear. Also, with the overall disappearance of pay phones their population may continue to shrink.
▼ “I went to check the safety of the Duet Phone in the Aeon Tsuchizakiminato Store [Akita Prefecture] but couldn’t find it. I asked the clerk and they said it was removed years ago. Only traces of its old sign remain.”
イオン土崎港店でデュエットホンの安否を確認しましたが、見当たらなかったので店員さんに確認したところ、数年前に撤去されたとのこと。撤去された看板跡だけ残っていました。#デュエットホン pic.twitter.com/31TBFzC84I
— ニャンパパ (@h4rwHG5osWTUWrJ) January 9, 2020
So if you happen to know of any Duet Phones wherever you are in Japan, let us know by sending an email from it. Then we can add it to this walkthrough and help everyone unlock that Platinum Trophy in the game of Japan.
Source: J-Town Net, Hot Hitoiki Recipe
Top image: YouTube/Tabi Suru Hikikomori Channel
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!

Navigate your way through Japan’s busiest train stations with Google Street View
10 best rest stops in Japan ranked by customer satisfaction for 2018
Character created by Hayao Miyazaki pops up on manhole covers in Ghibli Museum neighbourhood
Abandoned pirate pleasure ship sinking south of Tokyo Bay, city orders destruction
Tour Akita Prefecture from the back of an Akita Inu Dog with Google’s adorable doggie Street View
Foreign tourists in Japan eat far more rice than previously thought, according to new data
Kyoto receives more foreign tourists than ever before, but fewer visitors say they’ll return
JR releases prediction of peak Shinkansen crowdedness for Japan’s Obon travel season
Starbucks Japan unveils exclusive new Frappuccinos limited to three regional areas
Life-size Legendary Pokémon Mega Rayquaza digitally greeting travelers at Tokyo train station [Vid]
Starbucks Japan releases new “Afterword” collection that gives coffee waste a second life
Maximum entry fee for sento public baths in Tokyo increases slightly for adults next month
Japan has a maid hotel you can stay in, and it’s now taking reservation applications
Tokyo subway installing new ticket gates that don’t accept payment through Suica or other IC cards
McDonald’s Japan goes viral for Samurai Mac burger hack
New Shinkansen luggage drop-off system begins in Japan, making train travel even easier
Japanese Shinkansen becomes an overnight hotel for three nights this summer
99-year-old woman rescued while attempting to climb Mt. Fuji
Which country’s foreign tourists spend the most money per-person in Japan? Hint: Not the U..S. or China
Starbucks Japan releases a miniature display rack so you can create your very own store at home
Giant Evangelion Spear of Longinus to be installed at Japanese train station with Eva art trains
Face lettuce appears in Japan, with the face of Death Note’s Light Yagami, but why?
Kodama Shinkansen trains on popular Japan route get a whole new look this winter
Starbucks Japan adds a new summer Frappuccino to the menu, but is it as refreshing as it looks?
Studio Ghibli has a new anime out, and there’s only one place in the world where you can see it
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Japan now has human refrigerators inspired by Japanese vending machines
Hatsune Miku collaborates with Hokusai’s art in new Vocaloid ukiyo-e illustration series [Pics]
Japan triples departure tax, foreign tourists and locals now must pay more to leave country
Studio Ghibli releases anime T-shirts that pay homage to one of Hayao Miyazaki’s most personal films
Family Mart opens new “Famima” flagship store in Tokyo that’s like a tourist attraction
Sanrio Character Poll announces winners, Hello Kitty absent from top 10 in many countries
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
1:1-scale Ultraman artwork appears on headquarters of Japan’s biggest toymaker【Photos】
Five years on, Google Maps updates images of areas affected by 2011 earthquake and tsunami
Bad tourist manners at Mt Fuji Lawson photo spot prompts Japanese town to block view with screens
Veterinarian’s office in suburban Japan has custom sign drawn by manga star Rumiko Takahashi
Toilet rubber theft baffles, grosses out Japan
Scope out which love hotel to take your next date to right now in Google Street View
Japan’s “Underground Temple” now up for virtual touring in Google Street View
Japan is building a Pokémon Slowpoke Park to delight fans of all ages
Pink-shirted multiplying man found in Akihabara on Google Street View
The most unusual ATM in Japan? Banking with yokai spirits who want to know your PIN
Make sure to visit this historical onsen once before you die, or just do it right now with Google
Temple with 600-year-old tree near busy Tokyo station is like a tranquil pocket dimension
Where will you go this summer? Here are the top 10 Japanese swimming spots with the nicest water
The new world’s smallest park is in Japan, and it’s so tiny you might not even notice it【Video】
Beautifully off the beaten path in Nara with the Shimo no Negimichi shrine trail【Photos】
Welcome to Inami Station, where these adorable frogs keep you company as you wait for your train
Japanese woman mistaken for bear