A Surprisingly good first attempt was made by the OnePlus Open Review

OnePlus has released the OnePlus Open, a folding phone that can be opened and closed either vertically or horizontally. The phone is available in three colour variants namely white, black, and blue. The OnePlus Open has a Snapdragon 425 processor, 8GB of RAM, 128GB of storage, a 6.15-inch AMOLED display, a 16MP rear camera and a 5MP front camera.