how accurate altitude measurement mobile phone's gps? i've gathered lat/long can vary hundreds of meters same level of uncertainty present in altitude values?
in particular i'm working windows phone 7 i'm sure question applies other mobile devices. expect there few gps chip manufacturers , same chip used different phones.
this question deals how calculated doesn't mention accuracy or reliability.
since triangulation hands point in space, same inaccuracies apply z axis x , y.
in other words, it's no more , no less accurate accuracy of lat/long.
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