How Does the Phone Know Where the Wif Hot Spot Is?

We take the location from oursel towers, or the proximity to the sol towers that we're connected to. We've got a genesis available to us, this wifi data base that lives on a phone. So the device can quickly identify the wifit hotspot and its location  and help sort of narrow things down there. What else can we do tos help sort of create a really accurate and precise position from our phones? And one that i'm particularly keen on is the idea for o visual position. See your phone has largely been hidden from g and s s because it's been down in a tunnel. They will impacted by the fact that youare an electric train running in