The Nubia Z20 stood out among Android flagship phones thanks to the 5.1-inch display built right into its rear panel. However, its maker has now shared renders that suggest its next generation will not reprise the feature. Then again, it may get a display with a selfie camera that can be concealed under its panel instead.
https://www.notebookcheck.net/The-next-Nubia-Z-series-phone-might-lose-the-dual-screen-feature-but-gain-an-under-display-camera.536096.0.html