@Goran I.: I solved the problem by looking at my device, at the map after the first announcement "turn after..." and seeing where I have to turn: "Aha, right at the third intersection!"

I am ultimately responsible for the correct behavior and not a computer-animated voice with system-related delays...
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yes, iGO_Pal works best with Pongo skin and in DE I still use it - also on And.14 - Loqendo7