Any time I use an app that requires the compass including the compass it asks me to do the fig 8 to recalibrate it. This happens every where I am including outside in an open field. Pretty annoying. This just started happening.
i got bought my 4s on 27 December 2011, i recalibrated it when i first bought it, then again after i got it unlocked through iTunes via my carrier. so mine seems to work