2. Laser laser engraving signature on the back cover.

3. Configuration: OPPO R9 adopts a 5.5-inch display. In terms of appearance, OPPO R9 adopts a more curved side, and the R angle is more rounded, which fits the palm of your hand and is more comfortable to hold. The camera of OPPO R9 has been greatly improved compared with the previous generation, with the front lens16 million pixels and the rear sensor Sony IMX298. OPPO R9 fingerprint identification is also as fast as 0.2 seconds, and uses a combination of 4GB RAM+64GB ROM. In terms of battery life, the battery capacity of OPPO R9 is 2850mAh, and it is also equipped with VOOC flash charging technology to simulate normal use, and the battery life is as high as 12 hours.