Problem with phone tracker accuracy

We have two android phones - identical models.
I’ve checked the location settings of both phones and the HA companion app settings of both phones, and I think they’re identical.
But one phone’s tracker is much more reponsive than the other.
Any suggestions for something I may have missed?
Thanks.

So the answer to this is that one of the phones was running the Waze satnav app which forces the phone’s location to update continuously.