The swipe approach makes it all too easy to do the wrong thing (send an email instead of deleting it, to name but one). Inconsistent icon shapes look messy. Days of the week in the calendar are hidden unless you swipe the screen down (exposing yourself to accidentally activating a menu option). That despite the fact that the bottom half of the screen is empty, so there is plenty of room for the header with days of the week. There is no general header with the current time, battery and connection status, quite crucial pieces of information in a phone. You have to change the screen to get that. Last but no least, whose clever idea was it to separate the apps' settings from the apps themselves?