https://techcrunch.com/2019/02/25/oneplus-demos-a-5g-prototype-at-mwc/

OnePlus promised us a 5G handset this year. At Mobile World Congress this week, the company kind of, sort of delivered. Unlike the sea of other 5G devices unveiled at the show, however, the company’s offering is still very much in the prototype phase — like, behind protective glass with all of the interesting bits obscured, since it isn’t officially official.

The product appeared at Qualcomm’s booth this week, since OnePlus’ presence at the show has been mostly limited to closed door events. For the chipmaker, it was an opportunity to show yet again how ubiquitous its tech has become in the vast sea of Android devices.