I used Navigator on a samsung tab3 for 2 weeks in Sicily. Considering the density of the roads in all the cities and small towns and all the hairpin turns throughout the area I was quite pleased with the accuracy! The only issues I had were with the audio directions not matching the graphical map. Several times the audio was incorrect at traffic circles, usually the same ones. But the ggraphics were correct. Also a few miss calls on one way streets. But it did recalculate quickly. the audio could also be quicker on expected turns. as traffic is TERRIBLE in most small towns you may want to double the expected travel time on Sicily! :)
All and all I was very happy with the app. Maybe better instructions on how to setup waypoints and routes... thanks for the 1000km trip!!!
As far as "how to" instructions maybe just a simple cheat sheet on how to find and create "My Favorites" and how to add them to routes and organize them. It took me a while to figurethis out but once i didit was easy to do.
If you mean incorrect audio instructions it was mainly in Ragusa sicily and appeared to be at round abouts wit more than 4 exits Or exits very close together.
this tells me take 6th exit if you have to go around, which I have no idea why, then it is correct if you can take first exit, then it is probably error in map data
The 3 small crossroads close to roundabout are only apparent. Instead they are overlapping roads and cause errors in routing. From Via Archimede to Via Archimede MF returns obviously the first exit. Moreover from south Via Archimede to Via Padre Anselmo da Ragusa one should route the roundabout first, and so on.