"1. Keep you phone turned on.
This might not be as obvious as one would think. Very often people who call the Emergency Services will turn their phone off to save battery power. This is possibly the worst thing you can do; even with a low battery you may still have several hours on standby.
Turning off your phone not only prevents the Emergency Services from contacting you, should they need to, but it also means your phone cannot be 'found' if you need to be located. And while we are talking about locating someone via their mobile phone...
Contrary to what Hollywood would have you believe, tracing and locating a Mobile Phone which has called the Emergency Services is not done routinely and nor is it instantaneous; just because you have called the Emergency Services does not mean they have your exact location. Most Emergency Service telephone exchanges have upgraded to a system known as EISEC - Enhanced Information Service for Emergency Calls which means all calls made on a Mobile Phone automatically provide the ES operator with your telephone number and your service provider. With this information, the phone can be triangulated between its nearest Masts and the 'cell' from which you are calling can be identified. However, there are less Masts in rural and remote areas meaning your location may be with a margin of several hundred meters accuracy. This process of locating a caller can only be requested by the Police where there is sufficient need such as a Missing Person."
http://www.realfirstaid.co.uk/mobile-phone/
Piece in bold can actually be turned off, on every handset.
It adds to the problem of a response time when the service insists that paper maps no longer be carried and crews rely on SatNav systems, often phone based, which doesn't send them by the shortest/most direct route. Ambulances are only one of the Emergency services to rely on the above. And it doesn't make much difference when the call is from a landline either these days.
I have two major SatNav rat runs near me. One adds an extra two miles, the other up to five miles(Nearly three times the distance to be travelled). To get from the same point, to the same point, shortest direct route is 3 miles for two of the three Emergency Services. And if the response crews are not local, well you trust in the SatNav.
I know where the mast, that I'm connected to at present is. Some 2
1/2 miles, in a straight line, away. I used to work just down the road from it. I also know that the longer route taken is due to two masts being closer, and a phone based GPS system in use. The irony is one of them is located on a fire station, 3/8 mile in a straight line. The other is 700 yards away, again in a straight line. And in line of sight.