Had the same issue. Used a one quarter inch wide rubber band. Like a strap wrench. Put it around the lens cover, pinch it snug and turn. Applies even pressure on the entire circumference....worked even after I took pillars to it!,,! Hard to describe, easy to do.Have a new P4 Pro. Want to put lens filters on but cannot break the factory lens loose! Videos show simply unscrewing it. No way!