The Galaxy S9 series of phones were a great success if you wanted a flagship phone which didn’t excel in any particular category. They had the bad fortune to be sandwiched between the Pixel 2 and iPhone XS releases, making it very difficult for the S9 series to stand out – at least when it came to the camera department.
At the time, the Pixel 2 had the best camera on any phone – at leas for photos, and the iPhone XS was king in video and form factor with Apple’s new and exciting design language (for 2017-2018).