Haging had our car for a couple of months and the on going connection issues with Nissan Connect I was thinking of downloading Leaf Spy... how does it work and which one is best. .. any advice greatly appreciated.
You'll need a obd2 adaptor first. If you use ios then wifi, if android then bluetooth. Suggest a search for 'ELM 327' on ebay. They are no more than £15. Make sure you get one from within the uk as it'll take weeks to arrive otherwise!
Once you have this you plug it into the car (panel by drivers right knee). And pair your phone with it.
Suggest only getting the 'lite' version (free) until you have worked out the connectivity.