When I first got the Dell, a Windows update messed up the Bluetooth functionality, but Dell tech support was able to remove the update and fix the problem. That was last summer, so a new update might have done the same thing. Regarding the accuracy of the Dual GPS - qualitatively, it looks good. Last week I turned it on for the first time in several months, and it took almost an hour to "find itself". In Collector for iOS the GPS dot was showing >100 feet south of where I was. The Dual GPS app said estimated accuracy was 16 feet, so that wasn't right. Eventually it fixed itself. I realize it needed to download the current GPS almanac before it could accurately locate itself, but an hour is a long time to wait when you want to get to work. The Dual GPS advertises +/- 2.5 m accuracy with SBAS. I haven't really tested it quantitatively. I wish that Collector would display useful coordinates.
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