Apparently, E911 is just the technology that delivers a location to the emergency call center. Collecting data about the actual location is just a range specifi

Apparently, E911 is just the technology that delivers a location to the emergency call center. Collecting data about the actual location is just a range specification: https://www.fcc.gov/general/enhanced-9-1-1-wireless-services https://www.fcc.gov/general/enhanced-9-1-1-wireless-services They allow network-based location (like signal triangulation), where the location needs to be withing 100 meters for 67 percent of calls and 300 meters for 95 percent of the calls, and handset-based navigation (like GPS) where it has to be within 50 meters for 67% of calls, and within 150 meters for 90% of calls. Within those guidelines, I think that the phone provider can propose methods to use and have them approved by the FCC. But I guess whether your "precise" location gets tracked depends on the level of precision you're thinking of.