Usefulness, justification and your personal feelings on the matter aside, the Galaxy A9 (2018) officially holds the "the world's first quad camera smartphone" title and for better or worse has its sales pitch all lined up out of the gate. Now, all that remains is for Samsung to expand availability further and hope the hook works. The process is clearly already in motion, since the "SM-A9200" is now listed on TENAA. This, naturally, means that its release in China is imminent. In case you missed the official announcement from a few days ago, here are some basic specs on the Galaxy...
Source: https://www.gsmarena.com/samsung_galaxy_a9_2018_listed_on_tenaa-news-33831.php