Not a clue, but according to AT&T in the article below "It is already present in all Apple and Android smartphones. An AT&T spokesperson told Fierce via email,

Not a clue, but according to AT&T in the article below "It is already present in all Apple and Android smartphones. An AT&T spokesperson told Fierce via email, "There is no need to deploy anything new for smartphones." I'd be interested if anyone knew how they're doing it. https://www.fierce-network.com/wireless/att-rolls-out-gps-based-routing-wireless-9-1-1-calls https://www.fierce-network.com/wireless/att-rolls-out-gps-ba...