So, speaking of the S3, Google or Verizon updated it sometime in the last 3 months and basically rendered the GPS utterly useless.  I've searched on the topic and I'm not alone, in fact it seems like most if not everyone is affected to some degree.  My phone basically no longer will lock onto a GPS signal with enough reliability to navigate.  It's so inaccurate that it constantly reroutes while I'm driving down a straight road as it bounces around the +/- 100' sphere of where it thinks I am approximately.  The best I've been able to do is turn off everything but true GPS (turn off both Verizon and Google location services) which works OK, but is obviously not the way that it is intended to be used.  Anyone have any bright thoughts on this?  Other than to buy a different phone...  I'm insanely frustrated since the reason that I got rid of my last phone was horrid GPS.  The S3 was outstanding in this regard, at least in the beginning.