To close the Mobile App from the Task Switcher screen, follow the steps given below:

  • Tap the Home Button twice to open the Task Switcher.
  • This will bring up the tasks that are currently running on iPhone / iPad.
  • Press and hold on the App icon; the App will start to jiggle.
  • A red should appear at the corner of the App icon.
  • Tap the to quit the App.

Note: Works on iphone 3GS running iOS 4x above.