Here's a question for you: What do you value more? A totally bezel-free screen? Or great selfie camera?

It might seem like an odd question to ask. But that's the dilemma posed by Oppo's new prototype smartphone, which hides the selfie camera under the screen.

Oppo first teased the camera earlier this month, the first in the world. (Picture: Oppo)

Yup, that's right: No notch, no bezels, no pop-up module, Oppo has finally arrived at what seems to be the perfect solution... except that there is still a compromise here.

Chinese media have plenty of hands-on videos of the device, unveiled on Wednesday at Mobile World Congress Shanghai, with images appearing a little foggy and lacking in detail.

It shouldn't have come as a surprise. Oppo has been trying to manage expectations, with Vice President Shen Yiren repeatedly warning on Weibo that image quality will be compromised.

“There’s bound to be some loss in optical quality,” Shen said, right after teasing the camera with a Weibo video.

“Do not expect too much of its image quality,” Shen warned again in a Weibo post yesterday. “The application of new technologies won’t be so smooth-sailing.”

The company also posted a picture in a Weibo post, demonstrating what a picture shot with the under-display camera will be like.

It's a side-by-side image, showing the original image on the left -- and on the right, a second image shown with Oppo's algorithms applied.

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A picture shot with Oppo’s under-display camera, before and after optimization with algorithms. (Picture: Oppo)

Oppo says it's necessary because the under-display camera is receiving less than half the normal lighting as a regular camera. It applies automatic white balance, HDR, and a “haze removal” algorithm to make the image look a little more normal.

It just goes to underscore the unique challenge of hiding a camera under the screen.

Smartphone makers have been cranking up the quality of their displays for years now, packing them tighter with more pixels while also dramatically upping the brightness. All of those things make it even more difficult to fit a camera underneath, because a denser display means less room for the camera to "see" through the gaps in the screen.

And it doesn't just impact the camera quality. It affects the screen, too.

Photos from Engadget Chinese seem to show that the camera area is visible under the display. It may not be as noticeable as the notch, but you can definitely see the camera in Engadget's photos.

That might suggest why we probably won't see under-display cameras becoming common just yet. Samsung, who first discussed the idea last year, said last month that it won’t be ready for another one or two years. 

Even Oppo are sounding a note of caution.

“I think based on the actual experience at the moment, mass producing on a large scale would be very difficult,” Shen also said last Friday, addressing one Weibo user’s question about when under-display cameras will reach mass production.