I can't stand the OS of this phone. Everything is wrong and messed up. First of all, when I have missed phone calls or messages, it doesn't have the number show up on the app like it did on my S3. Second, I had to download an app to get a basic ass feature like notification lights (seriously wtf?) and I can't get it to work with Outlook (which completely shit the bed recently, btw). Third, I can't reorder my apps. It's forced into alphabetical order which is the dumbest thing ever. Even if I get used to it, downloading an app that starts with A will mess everything up. Finally, having the back button on the left side makes no sense, especially when the phone is so damn huge. I looked this one up and I would have to root my phone and maintain it through updates. Screw that. I can't wait for Samsung to come to their senses and make a non-shitty phone that doesn't have a lazy OS.