Tim

5 minutes ago, Nic Hubbard said:

No. Nothing has changed with our location services code.

We are working on this bug with Apple. It seems there is a point where assisted GPS is trying to use GPS and cell tower triangulation and when there is no service or spotty it doesn't do well.

What iOS and phone version please?

IPhone 6S  iso 10.3.3

Yep, offline maps.  Got to the point where even with extended service, cachly wouldn't work.  Had to use my GPS.  I was surprised, it had always been fine before.  Maybe something with the last update?

I just returned from a 2 week trip through 8 states and had this problem quite a bit.  When I had no service, cachly wouldn't work.  Seems like it got worse as the trip went on, but could be that some areas were more prone to no service.  I also have Sprint, which is another problem.