My compas iss laggy and inaccurate as well. I really liekthe concept of a compass with GPS, it makes turn by turn routing much mroe accurate, makes google streetview really useful by moving the image with the device. It'll improve Augmented reality apps like Layar as well.
Plus, as eper all othersmartphones on the market that include compasses, this is far from a gimick inclusion and has real world use so should work as advertised.
(IMHO)
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