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by usrusr 2738 days ago
Some (many? all? I have no idea) consumer chipsets with multiple GNSS support can get position from multiple constellations, but cannot combine the signals into one mixed constellation result of better quality than the best single-constellation result they get. In most cases what you see is the GPS result, except when you are close to one of the poles, which are uniquely (afaik) served by Glonass.