Sat navs iPhone

I returned iPhone to factory settings last night to try fix problem with sat navs on it.
Have nav free and google maps.
The problem was despite working for last couple months , the sat navs woul find location , start off then on .... But I was left with a triangular arrow wandering all over the map and not along the road as it used to do ... Happening on both ....thought a reset might fix problem but no.... Terribly annoying .... Any ideas !?


Location services are on for both thks


See pic next post
Paddy