Quote Originally Posted by great_fire View Post
Reading the reviews it seems that reliability depends on how good the GPS chip in your phone is.

I don't think this is reliable enough for the emergency services, maybe in addition.
As I mentioned, when any cellular call is connected to the dispatcher, along with caller ID information the first thing they see on their screen is a coarse location based upon the cell tower servicing the call. As the call progresses, a finer location is given if available using GPS/cell tower triangulation.