The Chinese electronics company has joined the line of phone manufacturers - including Samsung, Huawei, LG, Lenovo, and Royole - in launching plans for a foldable smartphone.
In an interview with Dutch site Tweakers, Oppo's product manager Chuck Wang revealed they are aiming to launch their product in the first half of next year, and that there will be more information on the device at Mobile World Congress in February.
As of the time of writing, there's no price, and more precise release window, or a list of features or specifications the phone will have.
Oppo's announcement comes after the specifications for Samsung's highly anticipated folding smartphone were released earlier this month.
The phone - known as the Galaxy Flex - will feature a 7.3-inch interior display used when its in tablet mode, but when closed up it will act as a smartphone with a 4.5 exterior screen.
Justin Denison, the tech giant's senior vice president of mobile marketing, unveiled the device and revealed it uses a new technology called Infinity Flex Display.
He said: "The Infinity Flex Display represents an entirely new mobile platform.
"We've been living in a world where the size of your screen can only be as large as the device itself. We've added a new dimension to help you browse, watch and multitask like never before."
In September, Chinese company Huawei announced they were "already working" on a similar phone design to compete against the Korean giants at Samsung.
The firm's executive Richard Yu said: "Why are you still using a computer? Probably because you find a smartphone display too small. We will change that. It is conceivable that you could fold out a display."