I moved over from iPhone after using them for 10 years. I can't believe I didn't make the move earlier. Samsung S9+ is amazing compared to my previous iPhone. Everything is better, screen, camera, layout etc etc. Everything is adaptable to suit me the user. I've also been showing my wife and she now says she wants one when here contract is up for renewal. Highly recommended phones. If you're thinking of doing the switch, stop thinking and just DO IT.
I'm in love with my S9+. It has a ton of sensors and features, the design and built quality is premium+ just what you expect from Samsung and not to mention the amazing camera which was the main reason for why I've purchased this phone for. I would definitely recommend it to anyone.