Getting intermittent loss of GPS signal on 6P- Android 7.x.x

I have (perhaps stupidly subscribed to get the latest Android OS) - whether coincidence or an error I am getting constant losses of GPS signal - GPS status and all other Apps loose connectivity. I have requested a return which is an option although clearly not preferred. I'm not sure it has anything to do with Nougat as I cant see other similar issues here. I cant recall the phone taking a knock or any reason why it is likely to have developed this problem. Any ideas/help really appreciated,