I have been using lightroom for almost a decade now. The introduction of lightroom mobile helped me a lot, editing on the go, taking pictures with my iphone. The most convinient function for me was when I send a collection to clients, they add a heart/comment to the images they want me to edit, and then I was able to see on the phone which photos they commented, i could comment back, etc. Then I switched to android and surprise, the android version does not support this. Also the 2013 iphone 5s was handling editing the smart previews from the collection faster than the 2017 samsung galaxy note 8 with 4 times the cores and more speed. Also Gestures are not supported, because gestures with 2 fingers on 4 inches is fine, but gestures on 6.3 is not?! The pen integration is also frustrating. I got this exact model, as it has pressure sensitive pen build in, I thought, I would be able to use it for editing pictures, but no, it's not optimized for lightroom, is samsung or android to blame, also lightroom doesn't have access to the 2nd camera, the 50mm one. I could go on with other stuff I don't like on android, but, that's for now.