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Samsung finally unveiled details about its foldable smartphone — here's how it works

samsung foldable phone
Samsung's foldable smartphone can unfold like a book — from a smartphone into a tablet. YouTube/Samsung
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Samsung finally revealed the first official details about its long-rumored foldable smartphone on Wednesday.

The phone, which is currently nameless, is essentially a clamshell device. There is a regular display on the front for standard smartphone use when the device is closed.

The magic happens when you open — or unfold — the device. The interior opens like a book to provide one seamless 7.3-inch screen, transforming the phone into a tablet. 

Before Samsung showed off the device at the event, it kept the phone in a square case to conceal its design.

Samsung senior vice president Justin Denison said, "Trust me, there's a device inside here [the case] and it is stunning."

The foldable display itself is called "Infinity Flex." To create its Infinity Flex display, Samsung said it needed to invent and use new materials to make a display that can fold an unfold "hundreds of thousands of times" without breaking or becoming damaged.

Samsung also worked with Google to create a special version of Android designed around a foldable display design. One of the highlighted features announced at Samsung's event was "App Continuity" that allows you to use an app when the phone is folded and continue using it when you unfold the phone in tablet format. The app would also enlarge itself to fill the tablet-format display.  

samsung foldable phone
The phone folded into a normal smartphone format.  YouTube/Samsung

Samsung also mentioned its "Multi-active Window" feature that would let you have up to three open and usable apps on the unfolded tablet display. 

samsung foldable phone 3 apps
YouTube/Samsung

Little else about the device was shared by Samsung, apart from confirmation that the company will begin mass production in the "coming months." Denison didn't make it clear whether a phone with the Infinity Flex display will begin mass production in the coming months, or if only the display itself will soon be mass produced.  There's still no word on pricing, design, specs, or final availability. 

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Antonio Villas-Boas was a consumer tech expert with over a decade of experience testing and reviewing smartphones, tablets, computers, smartwatches, and phone carriers.ExperienceAntonio joined the Business Insider team in 2015 as a tech reporter on the news desk and moved to the service journalism team in 2020. During his time as Business Insider’s senior tech reporter, Antonio developed industry-leading battery-life tests for smartphones and tablets, and covered and reviewed hundreds (if not thousands) of products from major brands like Apple, Google, Samsung, and OnePlus since as far back as Samsung’s Galaxy S6, the original Apple Watch, and the very first Google Pixel. This decade-plus of experience has given him tremendous insights into what consumer tech truly stands the test of time and what will be irrelevant in just a few years' time (RIP The Pebble).Antonio is also an experienced deal hunter, surfacing the best discounts on phones, laptops, and smartwatches for readers during sale events like Prime Day, Black Friday, and Cyber Monday. Previously, Antonio was a consumer-electronics analyst at PCMag and ran his own blog. Why you can trust AntonioAntonio approaches all his reviews not only as a tech expert but as a consumer himself. He reads every word of fine print in the phone carrier plans he reviews, and is deeply skeptical of deals that promise you the latest iPhone model for free. (Spoiler: it might be “free,” but you could be stuck with it for three years.)He largely recommends less expensive and small-scale fixes to upgrade your existing tech before considering buying the latest and flashiest in new tech. Antonio believes his role as the go-to “tech guy” for his family and friends extends to his readers as well; he only recommends products that have stood up to the testing process.Scripps News, NewsNation, Fox 5 DC, NBC LX, and Rich DeMuro’s “Rich On Tech” radio show have requested his commentary and expertise. ExpertiseHis expertise includes:
  • Phones, including the iPhone, Google Pixel, and Samsung Galaxy models
  • Phone accessories, including charging cables, phone cases, and protection plans
  • Smartwatches, including the Apple Watch, Galaxy Watch, Pixel Watch
  • Mobile carrier plans, including major carriers and MVNOs
  • Tablets, including iPads and Galaxy Tabs
  • Laptops and computers, including MacBooks and Windows models
  • Computer accessories, including mice, keyboards, and monitors
EducationAntonio graduated from Colgate University in 2009 with a bachelor's degree in history.Outside of workBesides testing tech products, Antonio is also a full time dad to two young kids. His ideal day would be spent on a lake in the Adirondacks.Learn more about how our team of experts tests and reviews products at Insider here.Learn more about how we test tech and electronics.