At just 4.85mm, the Oppo is by far the world’s thinnest smartphone. Don’t be fooled by that thin frame though, the R5 packs a 5.2-inch Full HD AMOLED display, and is powered by an octa-core 64-bit Qualcomm Snapdragon 615 processor and 2GB RAM. It also boasts a 13MP f/2.0 rear-facing camera and a 5MP front-facing camera. It’s too thin for a
headphone jack though.