How can i trace my built in gps phone htc that has been stolen?

Most phones comes with a manufacturing id. It would be printed at the back of your battery and also on the box in which the phone originally came. The cops can track this number even if the sim card is changed. They can pinpoint from which area the call was made and even disable the phone. At least that’s what the cops told me when I reported the theft of my phone a couple of years ago. I didn’t press charges as the phone was an inexpensive model and I didn’t want to land some poor bloke in trouble over it.

Emergency calls can now be tracked to the exact location as all cell phones have to come equipped with gps to help the 911 to come to the immediate rescue of people in trouble.

So, maybe that feature can be used to locate your phone but I am not sure if in case of theft this will be used. Ask the cops, they know best. Hope this helps.