IPhone SE be able to use it fully." The previous major redesign of the iPhone, the 4.7-inch iPhone 6 and the 5.5-inch iPhone 6 Plus, resulted in larger screen sizes. However, a significant number of customers still preferred the smaller 4-inch screen size of the iPhone 5 and the iPhone 5S. Apple stated in the "Let us loop you in" event on March 21, 2016 that they sold over 30 million 4-inch iPhones in 2015, further explaining that some people love smaller compact phones. Later in the event they presented the iPhone SE, describing it as "the most powerful 4-inch phone ever."
IPhone its successor required only 1.3 GB. The interface is based around the home screen, a graphical list of available applications. iPhone applications normally run one at a time. Starting with the iPhone 4, a primitive version of multitasking came into play. Users could double click the home button to select recently opened applications. However, the apps never ran in the background. Starting with iOS 7, though, apps can truly multitask, and each open application runs in the background when not in use, although most functionality is still available when making a call or listening to music. The home screen can