The Galaxy S9 and S9+ has nearly identical features of the S8 batch, with the same display size and aspect ratio, just like its predecessor. One highly regarded change to distinguish between the models is the location of the fingerprint sensor. While the S8's is found beside the camera, the S9's is directly underneath it. Most notably, however, the S9 line is primarily equipped with several camera improvements over the S8.
The phone has received generally favorable reviews, with critics mostly noting the enhanced camera and better positioned fingerprint scanner, while criticizing the fact that they were rather very similar to the Galaxy S8 line as a whole.