Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Seems not possible ...And the next question:
How do you delete a cached map???
New version of Google Maps took the option off the screen, there is now a round-about way of caching the map:
1- Open Google Maps and search for the area you want to cache (or just zoom in on it).
2- Tap the search bar.
3- Type "OK Maps" in the search bar.
4- Tap the search icon.