Oppo’s ‘slide-phone’ concept unfolds in three screen sizes It will be interesting to see if Oppo's "sliding-phone" makes it to the market similar to what LG did with Wing which has a swiveling screen December 16, 2020 12:15:08 pm Oppo's concept "slide-Phone" (Image: Oppo) While foldable phones are still in their second generation and have a lot of room to improve, Oppo unveiled a concept phone that looks straight out of sci-fi movies. The “slide-phone” concept was revealed by Oppo in partnership with Nendo at the fourth China International Industrial Design Expo (CIIDE). At first, the concept looked a bit complicated but Oppo released a demo video along with a press release showing how the device made in collaboration with a Japanese design firm will look in real life.