So I decided to buy the Vio to use with my vespa and then decided to keep 2 or 3 in stock at my vespa shop. All started ok after downloading the app for iPhone 7 Plus. Then after a while it would freeze and I would have to stop all the time and restart the app and Vio. Last month I was in Hamburg with the vio driving through the city, tbh it was a nightmare. The vio kept freezing all the time and the ? Kept flashing on the screen. When I arrived back home I deleted the app and re downloaded the maps again. To my surprise the map of Hamburg city was there and I could not delete it. It did not find my current position only the city centre of Hamburg I'am seriously considering not buying any more vio devices to sell until this problem is resolved.