The iPhone supports geolocation in mobile Safari via the following call:

navigator.geolocation.getCurrentPosition(
  function(pos){
    var lat = pos.coords.latitude;
    var long = pos.coords.longitude;
  },
  function(){
    /* Handler if location could not be found */
  }
);

I'd like to build a good list of devices that have one of the following:

1. support this feature out of the box, or
2. support this feature with an upgrade, or
3. support geolocation with equivalent fidelity of data with some other snippet of Javascript.

I'm only familiar with my own device, so this is my list so far:

Out of the box:

1. iPhone 3GS

Supported, but only with an update

1. iPhone 3G
2. iPhone 2G (?)
3. PC or Mac computer with Firefox 3.5

Supported with some other snippet

?

What is the level of support in Blackberry, Android phones, etc?