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The incomplete history of Duo devices

Apple announced the company's first device with a folding screen today, the iPhone Duo, but that's where the firsts end. The Duo is not only far from the first foldable on the market thanks to the efforts of Samsung and ...

By Nexvoro Tech Wire
PUBLISHED WED, SEP 9, 2026 10:47 PM UTC6 MIN READ
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The incomplete history of Duo devices
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Even Apple itself has a history of products called the Duo.

Even Apple itself has a history of products called the Duo.

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Apple announced the company's first device with a folding screen today, the iPhone Duo , but that's where the firsts end. The Duo is not only far from the first foldable on the market thanks to the efforts of Samsung and Google , but it's also not the first product to be called the Duo.

Former Apple CEO Steve Jobs popularized the saying "good artists copy, great artists steal," but will the iPhone Duo's folding screen, which features a custom nano-texture display material to help minimize the visibility of its crease, be enough to make us forget these other Duos that have come before it? Only time, or how aggressively Apple plans to market its Duo, will tell. Is there a Duo we missed? Let us know.

Forward Outlook & Market Perspective

Merging the functionality of the TurboGrafx-16 console and the TurboGrafx-CD that added CD-ROM functionality, the NEC TurboDuo (later rebranded to just the Duo) launched in North America in 1993 after debuting in Japan a few years earlier as the PC Engine Duo. The console was developed as part of a joint venture between NEC and Hudson Soft but never reached the popularity of the original TurboGrafx-16; its short run ended on Christmas Day in 1995.

First released in 2016 and eventually merged into Google Meet in 2022, Google Duo was the company's proprietary VoIP service meant to compete with products like Skype or Zoom and replace Hangouts. Its cross-platform availability included Android and iOS mobile devices as well as web browsers, and while it supported hi-def video calls, the service was also optimized for slow mobile networks.

The iPhone Duo isn't even Apple's first Duo. The PowerBook Duo predates everything Apple announced today by decades. It was an ultraportable laptop, and when Apple introduced it in 1992 it was the smallest and lightest PowerBook available , but still weighed over 4 pounds. Apple managed to shrink the Duo using an approach it still uses today: omitting built-in ports and expansion features. If you wanted to connect peripherals and accessories you had to rely on optional docks. If you've ever had to buy a USB hub to connect all your devices to your MacBook, you can thank the PowerBook Duo.

Twenty-three years after the PowerBook Duo was discontinued, the company announced the MagSafe Duo charger that could wirelessly charge an iPhone and an Apple Watch at the same time. However, it felt like a consolation prize for the Apple AirPower wireless charger , which was announced in 2017 but never materialized. The MagSafe Duo was discontinued just a few years later in late 2023, paving the way for the foldable iPhone to steal its identity.

That's right, the iPhone Duo isn't even the first folding mobile device to be called the Duo. Microsoft's Surface Duo launched in 2020 and managed to get around the issues with early foldables like the Samsung Galaxy Fold , which debuted a year prior, by skipping flexible screen technology altogether. Microsoft's Duo instead had a very visible hinge between its pair of 5.6-inch OLED screens. But software issues, a disappointing camera , and outdated specs when it launched all resulted in the Surface Duo's failure, even with an improved Duo 2 that launched a year later.

Trade shows are the birthplace of weird laptops, but sometimes the prototypes that often debut just to draw visitors to booths make it into the mainstream. Such was the case with the Asus ROG Zephyrus Duo , a powerful gaming laptop with excellent specs, a wildly expensive price tag, and a pair of 16-inch OLED screens that can be vertically stacked or placed side by side.

Reporting synthesized and verified under Nexvoro.tech editorial guidelines. Full primary records referenced via The Verge.

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