With the release of BlackBerry 7 devices folks will find a new on-board application in the mix. That application is the Compass app and in order for it to work it does indeed need to be calibrated every now and then, and the video above walks you all through that process.
Ultimately, the compass app as a standalone application doesn't really do all that much but tell you which direction your BlackBerry is facing but when you start using GPS and other location based services this is where the built-in magnetometer will shine. Even at the basic usage level right now, GPS accuracy and response times are quicker on the BlackBerry 7 line of devices vs. the BlackBerry 6 devices for example.
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