Pros: S9 has a better camera, better screen(more black) and better sound quality(stereo) then s8. Cons: almost same battery time with S8 so it is not enough if u are working more than 8 hours. Almost same speed etc
I have recently upgraded from an iPhone as the tarrif was expensive to the Samsung S9 .I have only had it a week & its absolutely incredible. I love the fingerprint recognition on the back of the phone as opposed to the front on my previous phone . It is incredibly user friendly .