The general rule of thumb for me is to never buy the first version of her product because it's still going to be a beta test. Never get the all new model of the car l, get one that is in a second or third year of being that model before they retool all the bugs will be worked out. I assumed that the four ass would be more of a refinement of the four instead of having all the teething problems of the new model. I did not take into account that iOS five would also have new model teething problems instead of being more for refine