I've just tested Google Maps on an Android device without Google Play Services or microG. The app works fine, although every time you cold-start it, the app sho

I've just tested Google Maps on an Android device without Google Play Services or microG. The app works fine, although every time you cold-start it, the app shows an alert (which can be dismissed but not disabled) and a notification (which can be specifically disabled) that Google Play Services is unavailable. On an Android device with microG, Google Maps works without showing the alert or the notification about Google Play Services.