Strange issue on my Note 2's compass too, sometimes does not calibrate properly, AND is running 4.3 but on AOSP. Is there a build problem/Samsung problem? Or is it hardware and I have to get it changed?
I have kinda a similar problem, in maps if I'm using navigation the arrow doesn't align correctly to the direction I'm going, not much of a problem.don't know if it's related to the GPS or the compass in my case
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