Oppo Find X9s Pro is set to launch in China on April 21, and leaked renders reveal its design and colour options. The phone appears with a square camera module and a compact 6.32-inch display. It is expected to feature a Dimensity 9500 chipset with up to 16GB RAM. The handset may include dual 200-megapixel cameras, a large battery of around 7,025mAh, and fast charging…