weird lock icon at the top of iPhone screen
iPhone 4, iOS 6.0.1
iPhone 4, iOS 6.0.1
That's the portrait orieintation lock, which prevents the screen from rotating sideways. To unlock it, double-tap the home button, swipe the list at the bottom to the right, then tap the left-most icon (to the left of the music controls).
Double-press Home button, slide to the right and select Unlock button, so the rotation will start
weird lock icon at the top of iPhone screen