Just updated my old phone to the Microsoft Lumia 550. I realise it has it own maps but I downloaded a free app from Navmii. It says the only data used is on the map downloads and the sat nav function is free. At the moment i've only downloaded the UK and France maps to see how it performs. I did try it locally and it seemed to perform ok. In the vehicle section you can select RV and Lorry but no dimensions. I'm not that tech savvy ( age thing ) so has anyone had any experience of this app or is there any better ones I could use. Its just to be used as a backup to my Snooper. We are off to France on the 18th so will try it there. Thanks in advance.