The crease on the OnePlus Open is almost imperceptible, visually and touch, once I start to see and use it in person. It's far better then the Z Fold 5 and Pixel Fold that I used for about ṭen days each before returning them. I will likely return the OnePlus Open too because I like the Samsung's multitasking implementation better, and I am waiting for Snapdragon 8 Gen 3. I am hoping the Z Fold 6 will be similar to the OnePlus Open later. The inside screen is absolutely gorgeous and useful.foldability is like sunroof in a car. nice to have? sure. need it? no. will I even use it? most likely never.
and the crease.....there is no way to solve such problem