Maybe you still don’t know that Google has a new option for finding your smartphone if you loose it or if it has been stolen.
Now Google let’s you search your phone by typing “Find my phone” right on the Google search engine: google.com
The Browser will show a window from Google Maps service of Google and will mark the location of your phone, if you are lucky and your phone has GPS Location enabled and internet access, you will get to see your phone on the map. Also you can make your phone to ring to find it. Also you will have to be logged on your computer with the same login account as on your smartphone.
This method will work only for Android devices with the latest updates.