How accurate is FamilyMap?
AT&T FamilyMap uses a number of techniques to determine a phone’s location. AT&T phones that have A-GPS (Assisted GPS) return the most accurate locations when they have a clear line of sight to GPS satellites. For example, the phone is outside or is in a car near a window. For phones where A-GPS is not available, FamilyMap uses cell tower information to provide the most accurate location possible, which is usually within a few hundred yards to a few miles of the phone’s actual location. This includes iPhones, non A-GPS phones, as well as A-GPS phones that are not in a clear line of sight to GPS satellites. In some situations, AT&T FamilyMap will not be able to locate a phone. The most common reasons are: • The phone that you are trying to locate is deep inside a building or car. • The phone is surrounded by tall buildings, hills, or trees. • The phone is powered off. • The phone’s battery has run out. • The phone is not in an AT&T coverage area; to view coverage, please click here • Se
