Guangdong Oppo Mobile Communications, commonly referred to as OPPO, is a Chinese consumer electronics and mobile communications company headquartered in Dongguan, Guangdong, China, best known for its smartphones, Blu-ray players and other electronic devices. OPPO is the leading smartphone company and one of the best smartphone brands in China in 2019, ranking fifth in the world. It is a subsidiary of BBK Electronics along with Vivo, Realme and OnePlus.