Demoed at Lenovo's Tech World event, the foldable phone prototype seems to be very similar to what Samsung could be releasing in November. it has a hinge system in the middle of the display and several segments that facilitate the folding angle. the device is quite responsive, but Lenovo still has to rectify a few issues for the final versions.
https://www.notebookcheck.net/Lenovo-demos-foldable-phone-prototype.335914.0.html