Step aside, Gionee, as your record for the world's slimmest smartphone has just been beaten by a fellow Chinese manufacturer. Oppo's R5, the successor to the Asia-only R3, comes in at just 4.85mm thick, thus beating the 5.15mm-thick Elife S5.1 from Gionee. Despite the crazy thin metallic body, the R5 still packs a handful of goodies: a 5.2-inch full HD AMOLED screen, an octa-core (quad 2.1GHz and quad 1.5GHz), 64-bit Snapdragon 615 SoC, 2GB of RAM, 5MP/13MP cameras (both with f/2.0 aperture), LTE radio and a 2,000 mAh battery. All of this comes in at just 155g heavy. Of course, there's bound to be a trade-off: You only get 16GB of internal storage, no microSD expansion and, unlike the Elife S5.1, no 3.5mm headphone connector here -- you'll need to use the bundled micro-USB adapter or Bluetooth (there's an optional O-Music Bluetooth clip for your headphones and for triggering the camera).