The quest for a completely bordlerless smartphone continues, with Oppo taking a step closer to achieving it today with the announcement of a prototype "Waterfall Screen."

What makes the Waterfall Screen unique is the 88 degree curved body, which wraps the display around two sides of the handset far more than what we've seen before in handsets such as the Galaxy S10 or Huawei P30 Pro. It also sees Oppo improve upon the Panoramic Arc Screen used for the Find X, which allowed for a 93.8 percent screen-to-body ratio.

For now, this new screen is just a prototype, but one that looks to be at a point where it could ship in a smartphone if the images are to be believed. There are a few questions that need answering, though. For example, are the curved sections of this new display touch sensitive? If they are, how is Oppo going to deal with accidental input simply from holding the phone?

The handset used to show off the Waterfall Display is surprisingly tall. That should make it easier to hold in one hand, but reaching the upper area of the screen will be difficult and beyond most people. Putting this new screen in a protective case will also prove difficult, and especially so if the curved areas are touch sensitive and therefore can't be covered up.

Finally, there's the question of comfort in the hand. With the sides of the phone being mostly screen, will it be easy to grip or a slippery nightmare?

For now, we should treat the Waterfall Screen for what it is: an impressive prototype that does take us a step close to zero borders. If it does ship in a phone, it will also allow us to answer the question, is this really what we want or is completely borderless great for marketing but poor for usability?