The biggest challenge for any foldable phone is literally managing its fold. Almost all foldable phones have this crease along which they fold. And in almost all cases, this crease becomes more visible with the passage of time, and sometimes even develops into cracks, It is, however, unavoidable as the screen folds along it! Most brands have not really covered themselves with glory in this regard. So how does the OnePlus Open fare handle its crease?