- Edited
I must admit that I don't know. I use Google Maps and Magic Earth in my main PIP (depending the reason for my travel). I also start my phone hotspot upon the bluetooth connection between my phone and my unit.
Both google Maps and Magic Earth have no issues. There is some cached map data and GPS simply works, and after some seconds, after WiFi connection, they both do work over WiFi and use WiFi.
They are "auto correcting" on WiFi.
dogsfoot I have Waze setup to start on startup on Mekede Dudu7 head unit and sometimes it starts with no roads showing on the screen and no internet connection.
Does Waze not auto-correct? I consider that a bug. What if your phone currently doesn't have internet? Is Waze also empty and does it not auto-correct once WiFi or your data is restored?
Edit: Waze doesn't have offline data as it is completely cloud-based, but it downloads map tiles from the last route. If you start from the last position, it must show that cached map tile(s). If it is empty, this cached data is obviously removed.