Step 1: The easiest way to recover lost or deleted Android app icons/widgets is to touch and hold on an empty space on your Home screen. This method should cause a new menu to pop up with customizable options for your device. Step 2: Next, select Widgets and Apps to open a new menu.
How do I recover lost widgets?
Go here > Dashboard > Appearance > Widgets and look int the “Inactive Widgets? module to locate the widget you deleted and then set it up in your sidebar again. You have not specified which widget you are referring to.
Why do my apps disappear from my home screen?
As for Android users, the commonest reason is that you (or someone else) removed the app icon from your home screen manually. On most Android devices, users can simply pull out an app by long-pressing and swiping it to an X icon above the screen.