Complex Magazine has a useful tip for those looking to use google maps on their iOS 6 enabled device such as the iphone 5. It goes as follows –
There’s a workaround you can use to have your cake and eat it, too.
Although there is currently no iOS 6 version of Google Maps available either natively or in the App Store, the full service and all of its glorious data are still accessible via HTML 5 Web app. If you have iOS 6 on your phone, point your Safari browser to maps.google.com and click the export button in the middle of the menu bar to save the app to your homescreen. Once installed, you’ll now see “Google Maps” on your homescreen complete with its own appropriately designed app icon.