With a 6.2-inch full HD+ display and a Qualcomm Snapdragon 636 processor, the Lenovo S5 Pro also brings two dual camera setups (one on each side) in the sub-US$200 price range, something that no major brand managed to do so far. Sadly, this handset might remain exclusively available in China.
https://www.notebookcheck.net/Lenovo-S5-Pro-debuts-in-China-dual-camera-with-2X-optical-zoom-in-tow.342891.0.html