Recenty I bought GPSMap 65, brand new. I test it once at a nearby office alongside my cellphone that has features GPS, Glonass, and BDS. Put the devices side by side and start walking around on fairly open space. The office is surrounded by 2 high towers buildings, 1 space, and 1 low rise building. I walk around the building with slow pace. The day is clear, absolutely no cloud. The end results, the cellphone gives out pretty decent result compared to the GPS... I overlay the result onto google map. The result from cellphone is better than the GPS. Althought no results give out straight line, but the result from cellphone is closer to straight line than the GPSMap. And, on one ocasion, the GPS is off by 25m+ I am wondering why. More coming up: testing by driving on the city road on motor bike. I post it later thanks
