I beleive one of the European Directives requres phones and cars to be able to transmit their current location to emergency services. In the case of cars this would be done automatically when the car detects a crash. I am not sure how this will work in the case of a phone presumably there will be some provision to transmit your position and also the nature of the emergency from a menu.

Implimentation of this is waiting for final commisioning of the European Galileo navigation system as the EU do not want to be dependant on US or Russian technology that can be turned off any time they like.

It is not clear what the UK position will be post Brexit as we will not have access to the Galileo system due to security concerns.