I am building a site that will have address links as well as image of a map - both of which have a link to Google Maps.
The problem is that when I click on these links u
I just tested this and it worked in pulling up Google Maps instead of the default Apple Maps application.
Testing Maps
However, after deleting the Google Maps app for iOS, the link fails to open anything because that schema is no longer available and doesn't fallback to a generic maps link... almost seems like you would need to provide two links for Google Maps for iPhone and another generic Apple Map link...