XPost: comp.mobile.android, sci.geo.satellite-nav   
   From: usenet@andyburns.uk   
      
   Wally J wrote:   
      
   > I was unaware Maps was actually using cell-tower geolocation.   
   > If Google Maps is using cell-tower geolocation, how do you turn that   
   > off?   
      
   Under Settings > Location > Location Services > Google Location Accuracy   
   there's an "improve location accuracy" toggle, if you turn that off   
   it'll only use GPS without WiFi/Mobile.   
      
   > Where do they get the database given they're supposedly not published   
   > by the cellular carriers   
   Google have billions of android devices, many/most of which will have   
   GPS enabled, those devices can report where they are and which   
   cell-towers they can "see" along with signal strengths.  It's not hard   
   for them to build a database of towers from that.   
      
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