It is getting easier and easier to stick with last year’s model than upgrading to the latest one. New phones are only getting incremental upgrades over their predecessors these days. Therefore, the Galaxy S9 and S9 plus are the best smartphone you can buy at the moment but if you have a Galaxy S8 or S8 plus, is it worth to upgrade? The Galaxy S9’s and S9 plus design, screen and batteries … are exactly the same as the S8 and S8 plus and you are not missing out on any features. The Galaxy S9 and S9 plus currently running with Android 8.0 and the S8 and S8 plus with Android 7.0 but you will not really see or feel much a difference between the two. But if you like take photos, stand the fingerprint sensor and use facial or Iris recognition, you should upgrade to the Galaxy S9 from the Galaxy S8.