Using Apple Maps without data connection

[iPodTouchOwner]

I've recently purchased an iPhone SE and have started expermienting with turn-by-turn navigation. I've read that you can avoid using up your data plan if you chart out you trip ahead of time. The route information apparently stays in memory.

Does anyone know how you would have to chart out the route in order to capture sufficient details in memory for turn-by-turn navigation? It seems to me that the latter requires quite a bit of map detail. Would you need to (for example) pan through the whole route at a particular zoom level?

I'm not sure if it really matters, but I'm using voice navigation.

 

[iPodTouchOwner]

From experimentation, if you choose one of three routes to a destination, Apple Maps will guide you along that route without cellular data connection turned on. If you deviate from that route because you prefer another route, it wil persistently show that it is recalculating, but never actually do it. It has the map info to show where you are, but apparently, the intelligence to recalculate the route is not resident on the phone.

I also found that the direction in which the car was facing was not properly depicted on the map until I started moving. I find this understandable, as the phone itself was not oriented directly facing forward. The orientation of the phone depends on where it is mounted, and how it is angled for best visibility by the driver.