
Next year, the first foldable phone gets launched, according to WitsView, but they will only take 0.1% of the 2019 smartphone market rising to 1.5% of the 2021 market.
Samsung, which has the foldable AMOLED panel technology, is expected to be the first to launch.

Huawei, LG, Lenovo and Google are said to be planning to launch foldable phones but are held back because of the lack of alternative panel suppliers to Samsung.
At the moment designs are said to be focused on inward folding phones. More
By David Manners electronicsweekly.com