For months, LG has been teasing its LG Rollable smartphone with a screen that expands to give you a tablet-sized device at the touch of a button. But LG’s smartphone business has been underperforming, and it’s unclear at this point whether the phone will ever see the light of day.

But rollable smartphone technology? It’s not exclusive to LG.

Chinese phone maker Oppo is also developing a phone with an expandable display, and French blogger Brandon Le Proktor has posted a hands-on video with a prototype of the Oppo X 2021 concept device, and it looks pretty remarkable in action.

Here’s the basic idea: At first glance, Oppo’s smartphone has a 6.7 inch plastic OLED display. But the screen is actually a flexible OLED display with part of the screen rolled up and hidden inside the phone’s case. Press a button and the phone expands, the screen unrolls, and you find yourself holding a 7.4 inch tablet.

While that may not sound much bigger, the 6.7 inch screen is narrower. If I had to guess, I’d say the device has something like a 21:9 aspect ratio display in phone mode and a 4:3 or 3:2 screen in tablet mode.

That means that, like a Samsung Galaxy Z Fold 2, Microsoft Surface Duo, or other foldable phones, you can choose between a smaller, narrower screen or a larger, wider one depending on your use case. But you don’t have to worry about a seam down the middle of the phone and there’s no need for a secondary cover display.

Le Proktor notes that at almost half a pound, the phone is on the heavy side. But it’s still reasonably lightweight by tablet standards. And unlike a typical tablet, you can reduce the size of this device so that it easily fits in your pocket.

I have no idea how you’d fit it in a case though, unless case makers start producing flexible cases and/or cases that are designed to let you easily pop the device in and out. I’m pretty sure you’ll never be able to use a screen protector with this phone though.

Other details I picked up from the video:

  • The phone’s sides are made of plastic.
  • There’s only a single button on the phone: a single-press turns on the screen, a double-press expands or contracts the display, and you can slide your finger up or down over the button to adjust the audio volume.
  • While the Oppo X 2021 is officially a concept device right now, the company may be planning to launch a real product using this technology in 2021 or early 2022.
  • Due to the unusual design, the phone is not waterproof.
  • The demo phone has software that tries to accommodate the weirdness of shifting screen sizes – for example, text or graphics stretches or expands when you switch modes, but eventually the screen just fades out so everything can be resized at once.

Oppo hasn’t officially revealed specs for its demo phone, and there’s no word on how much it will cost, but smart money is on the answer being ” a lot.”

Update 2/23/2021: Oppo officially introduced the Oppo X 2021 at Mobile World Congress Shanghai, and the company’s website has more photos, details, and an English language explainer video. 

via NotebookCheck

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  1. Nice to see somewhat different things in the smartphone space again. At least different uses of flexible screens.

    Although, I’m not the target audience. I’m at the phase again where if I need to do more than some quick lookup of something, I’d rather take a UMPC around with me and use that. I’m pretty sure I’m in a smaller niche than those who would use these flexible display phones though.

  2. Thats some neat scaling screenshot trickery that the OS uses to scale the web browser. It’s clearly to hide how slow a browser would be to react to the changing screen size.

    1. I wouldn’t say “slow”, I’d say “clunky”. Consider what this website does when you change the width of the browser window. Even on a pinephone (connected to a nexdock) it feels responsive, and I’m sure this is more powerful than that.
      It’s just not smooth like that smooth unrolling. Non browser apps (with a few specially built exceptions, like the launcher) would probably be even clunkier.