The Oppo Find N5 is a Remarkably Thin and Practical Foldable Phone

https://www.cnet.com/tech/mobile/oppo-find-n5-review-a-remarkably-thin-and-practical-foldable-phone/

https://www.oppo.com/en/smartphones/series-find-n/find-n5/

https://www.oppo.com/ae/smartphones/series-find-n/find-n5/specs/

https://www.gsmarena.com/oppo_find_n5-13659.php

Oppo Find N5 Review https://www.youtube.com/watch?v=DnY6J7YAsGg

Of course given enough time, several gadgets will get thinner, smaller or larger and especially faster.

https://www.theverge.com/2018/11/14/18088620/samsung-foldable-phone-science-fiction-movies-television-westworld-star-trek

https://www.techradar.com/news/world-of-tech/the-tech-of-westworld-1329601