I just got a new S4 to replace an iPhone 5, and I must say that I am disappointed in this phone. Yes, I know that many posts have been made about the lag issues, but I must say that it is unacceptable to have a phone with these specs to stutter and lag as it does. I used to have a S3, and it was much smoother than the 4. I read where people say to turn off this, and disable that, but that should not be necessary. It should run smooth out of the box, but it doesn't. I even use Nova launcher, to no avail. I don't know what the problem is, but Samsung needs to fix it, and quickly. I had a DNA, and it was WAY smoother than this phone. I like Android and iOS, and use both, but several Android phones and all iPhone 5's are smoother than the S4. OVERRATED is the best word to describe it. Get it together, Samsung! You have a great product here, so make it stutter-free and lag-free without having to turn off all of the features. Your customers will appreciate it.