Foldable phones promise the screen of a small tablet in a pocket-sized device.
Since this is yet another Android Go product, don't expect to be blown away by specs; the Samsung Galaxy J4 Core is a budget device through-and-through but should be more than capable for anyone who needs a stylish Android Go phone.
Both reporters confirmed that the folding technology worked - halving the size of the 7.8-inch (20-centimetre) plastic screen with one 180-degree twist.
At the Samsung Developer Conference in San Francisco, Justin Denison, a senior vice president of mobile product marketing, withdrew a prototype of what has so far been called the Galaxy F from the inside pocket of his suit.
"This device is very much a first-generation product", he said.
If your phone don't fold, you're lame and old. Samsung also has a New Infinity display in the works, as pointed out in the same image as the notched displays, though there's no news on what that display would be like.
The three new notched displays should be heading to new devices by 2019 and beyond. Google is working with Samsung to help launch a device next year.
Royole said it would start filling orders in late December.
Samsung and Huawei have been vying to be the world's first developer of a foldable smartphone. Samsung released its first Android Go phone earlier this year in the form of the Galaxy J2 Core, and just a few months later, we have another entry with the J4 Core.
Here's a look at the five key takeaways from the Samsung Developers Conference 2018.
CDC: Ebola outbreak may be beyond control
The vaccine that is being administered is still experimental but has been shown to be protective in the clinical trials. The infection is capable of killing 20 to 70 percent of those who are infected depending on the strain of virus.