Mobile OEM marketing strategy

What is mobile OEM marketing strategy? 

Apps looking to promote and advertise their brands outside the default app stores, can use mobile OEM marketing strategies and launch campaigns on alternative app stores of mobile OEMs such as Xiaomi, Oppo, Vivo, OnePlus, Samsung, and Realme. Mobile OEMs have high-intent data including demographics that allows app advertisers to create highly rewarding marketing strategies while having the freedom to customize content and place ads across multiple ad formats.