You have to click the small button with your finger in order to close/delete an App. This really gives frustrating user experience to me. Sometimes I need to tap several times to hit the button. I often ask. If Apple thinks 4inch is the perfect size of a mobile phone for human’s hand to hold and manipulate, if they think the thumb-sized application icons are perfect to hit with thumb. Well, all these are kind of true due to ergonomics. Why do they think the small close button can be tapped effortless?
Fortunately, Apple just release iOS 7 last night. My colleague installed it on his device and showed it to me. I find the this Jonathan Ive designed system really fixed the problem. Now you can kill an application by swipe it with your finger.