Back in older days of the earlier iPhones and firmware for these Apple handsets users had to click twice their Home button to switch between applications, copy things from one browser to the Mail program and do other things with the smartphone. The operating system released in 2013 is like the cosmetic surgery but for the software and Apple users. It makes iOS 7 switch between apps more intuitive and simple.
iOS 7 iPhone Control Center and better multitasking. Once you double-click on Home button you will see a list of icons that represent all your open programs. The pics will display what each app is about. There is no need to switch into the application if you just wanted to make sure everything is going on the way you wanted in it and this information can be obtained from the shrunken-down image of the program’s screen.
 When you need to launch one of the apps you should just press on its icon. iOS 7 quit app option is achieved by closing down the application through flicking its mini display upward. The program flies up and disappears from the list of open apps. Don’t worry, it will not disappear from the iPhone because the next time you will launch it, the program will reappear in the line-up of all open apps.
There is no need to quick all the applications because your handset can manage its memory and the number of programs in the app switcher won’t make it slower. If you feel that there is a problem with the device you can restart it and everything should get back to normal.