Royole FlexPai

The Royole FlexPai holds a unique place in smartphone history as the world's first commercially available foldable phone. Announced in October 2018 and released in limited quantities in December 2018 — beating Samsung's Galaxy Fold to market by several months — it proved that foldable smartphones could actually exist outside of a concept video. Its single flexible AMOLED display wraps around the outside of the device, folding in half to transform from a 7.8-inch tablet into a compact phone. Royole Technologies, the company behind it, has since been declared bankrupt, making genuine units increasingly rare collector's pieces and a permanent entry in the history books of mobile technology. Key Specifications Display: 7.8" flexible AMOLED, 1440 × 1920, outward-folding Chipset: Qualcomm Snapdragon 855 | RAM: 6 GB or 8 GB Storage: 128 GB / 256 GB / 512 GB Camera: 20 MP + 16 MP dual rear | Battery: 4,000 mAh OS: Water OS (Android-based) Connectivity: 4G LTE, Dual SIM, fingerprint sensor Significance: World's first commercially released foldable smartphone (2018)