Can I use maps offline?
Milo does not currently support true offline maps. Your Apple Watch needs an internet connection (through your iPhone or its own cellular service) to load the map background.
The route line is always saved and will still appear, but the full map may not.
What about caching?
Your watch may temporarily remember map areas you viewed recently. If you lose connection, those tiles might still show up. However, caching is limited and not reliable for full offline navigation.
Tip: Before heading out, open the route on your watch while connected to Wi-Fi and scroll along the whole path. This increases the chances of the map being cached.
We know offline maps are important, and we plan to add them as soon as Apple supports them in MapKit.