In IOS7 the compass doesn't work, what should I do?

The problem was solved on my iphone 5 with IOS 7.0.2 and the truth north option enabled. Tested rebooting the app and the phone, the problem has gone.

I just enabled location services for this app (compass calibration). Just go to privacy / enable localization / system services / compass calibration.

Greetings

iphone compass does NOT like magnets. Usually the one built into your phone case!! Remove the case & try again. Also, fast figures of eight motion will re-calibrate the giros.

Look at the date of the first post.