Number 4 looks like it was designed by Ikea. I think people are mistaking color for personality. It looks super generic to me and also while very flat also somehow very 90s. Maybe it's the color choices. Besides that it just looks bland.
But it at least looks ok-ish in a sense that it would be acceptable for like a Chinese feature phone. And some people may actually like it! But I would be really sad if Ios 7 looked like that.
Hey! Here's a novel concept, and it doesn't require you to spend **any** time speculating, totally mis-understanding inter-relational elements, object spacing etc, or rendering "concepts" or guessing...