See
http://googlemobile.blogspot.com/2011/05/google-maps-on-your-mobile-browser.html

<<...
we’re announcing our updated
Google Maps experience for mobile
browsers on Android and iOS.
Now, when you visit http://maps.google.com on your phone or tablet’s browser and opt-in to share your location, you can use many of the same Google Maps features you ’re used to from the desktop.
... >>