The compass on my 3GS is always off by at least 15 degrees and sometimes is off by as much as 90. It doesn't matter if I have it set to true or magnetic norh, it is always wrong. I'm not near any compass interference. I'm using 3.0.1. Does anyone else have this problem or is it a hardware issue on my phone?
Usually headphones, car dashboard, and your computer can cause interference with the compass.
What i found useful is that when i am using it in the car on the dashboard, when the calibration pops up i ignore it and it calibrates itself.
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Compass is wrong
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