As far as I know, a PWA (Phone Web) setup does not automatically switch to a full offline mode when connectivity is lost.

PWAs in Mendix can cache some static resources (like pages and assets), so the app might still open, but data-related actions (microflows, database calls, integrations) usually still require a connection. So in many cases, the app may not function as expected when offline.



For full offline support (working with data, syncing later, etc.), Mendix typically relies on the native mobile offline-first approach rather than PWA.

So it might work partially offline depending on caching, but it is not the same as a true offline-capable app.

If this resolves your question, please mark it as accepted.