Location and mobile-application help needed.

I wanted to test the location finder application if I accendently lost my phone, but it says Locate is not supported by this device. What do I do to fix this? I want to locate my phone if I accedently lost it.

 

And I have a another problem. The security function at my NortonMobileSecurity says that there is an applicationconflict and i have to uninstall Norton Anti-Theft? But I need Norton Anti-Theft?