Here is an answer on very popular question: Why widget cannot be launched?
First of all, widget not APP! That’s why it cannot be launched with open button.
You need to go through few steps to activate:
- Go to your home screen by pressing HOME button
- Press MENU button and then Click on +ADD
- Select WIDGETS from list
- Find widget which you want to add on your HOME Screen, for example, GPS OnOff widget.
Here are few screenshots with more detailed information about activating widget: