I've previously used Windows Phone, but a recent BYOD policy change at work pushed me into Android for the first time. I'd heard a lot of positive stuff about the phone and the OS from Android enthusiasts, and a lot of negative stuff from WP enthusiasts. After a couple weeks with my Galaxy S III, I've decided that both sides are right. Hardware A lot has been written about the pentile display. I will say right off the bat that the "blurriness" some associate with the pentile display is something I haven't noticed in the slightest. It seems very sharp to me, and the high resolution is a welcome change from WP7's 800x480. And I do a lot of email with it, so if the blurriness was as bad as some claim, it'd bother me.. It's just not something I think you'd ever notice unless you went looking for it. On the other hand, the bluish cast of the screen is immediately obvious. It's not bad, but it's ever-present. The case is unapologetically plastic. And that's fine--it's incredibly light for the size, and there's no reason that plastic is bad, objectively. From an engineering perspective, it's a fantastic material. But does it feel as luxurious as an iPhone or even the plastic unibody of Lumia 920? No, not at all. This turns out to be a moot issue, though, the moment you slap a case on it. And most people I know, perhaps 90%, put cases on their smartphones. I wasn't planning on doing that initially with this, but considering how easy the buttons are to press (volume going up and down in my pocket, etc), I got an Elago slim-fit case just so that the buttons and camera lens would be recessed for protection. Operating system Initial reaction to Android coming from WP was pretty bad. I was met with a half-dozen screens full of icons and widgets to bloatware, not in any meaningful arrangement. And the settings menu was an indecipherable mass of options. The other thing I was immediately struck by is that a lot of the default apps are really not very good. The default music player had no way to look up album art for your music. The default web browser (creatively named "internet") is nothing to write home about. The stock camera app is AWFUL--it prioritizes fast shutter speed so much that blurriness in the images is ever-present. So while a casual user can really take a WP or iOS phone out of the box and just start using it very well, I spent a lot of time in the first week figuring out which third-party camera app to get, which third-party web browser, what third-party media player, etc. I also spent a lot of time getting rid of all the homescreens and making my own three-homescreen setup, changing all the settings to something that works for me, etc. Once I had learned how to change the settings I need, and rearrange the OS the way I wanted it, I changed from hating it to loving it. A mix of icons and widgets is incredibly effective once you get it set up right. Its more space-efficient and somewhat more useful than the live tiles of WP. For example, I have media player controls on the widget for Spotify, and my calendar app shows the next several appointments and clicking on one jumps right to that appointment's details. And compared to the app-drawer-like experience of iOS, there's just no comparison. However, its worth noting that most users won't actually ever do this. Although Android is definitely the most capable of the three in the hands of a user who bothers to learn how to use it, IMO its the worst straight-out-of-the-box experience. In an incredible dose of irony, there's a beginner-oriented homescreen mode on the GS3, meant to make it easy for casual users to use. The problem? This is buried away in settings where no novice would ever find it. And when it comes to stuff like changing which shortcuts are on the lock screen, even I needed to look it up online before I could figure out how to do it. I spent a week trying to figure it out on my own, and ultimately I decided it couldn't be done. Thankfully I searched online before giving up entirely, because it can in fact be done. The notification shade and the multitasking screen are both very useful one you learn how to use them. The notification shade is a big advantage over WP7--being able to pull up all your notifications in one place is great. And toggle settings for GPS, Wifi, do-not-disturb mode, etc are quite easy to get to. This is the one situation where it's easier to change things in Android than WP. All in all, Android reminds me a lot of Windows PCs. A lot of the programs it comes pre-bundled with are total crud. Compare preloaded Windows PC software with preloaded OSX software and there's just no comparison in quality. However, consistent with that metaphor (where Windows Phone is playing the role of OSX), once you go beyond preloaded, the software options with Android are vastly superior. The WP camera app is way better than the stock GS3 camera app, but on the other hand, ProCapture ($2 from the Play Store) is far better than either. Same story with Samsung's media player versus the Zune player versus the N7 Player ($2 from the Play Store). Am I glad I'm on Android? Very much so. I was forced into this change by a BYOD policy at work, but once I forced myself to learn how to use an Android phone, this delivers a better user experience for me than WP did. But would I recommend the GS3 to my wife or my mother, neither of whom are very tech-saavy? No. My wife has learned WP and my mother has learned iOS, but I really don't think either would have as good of a user experience with Android.