Every case I have had have very easily come off, (especially when getting in/out of car ... or just simply sitting down). They all have had just a simple set of "touching" jaws, (relying completely on spring). It should be very simple to design a "overlapping" type design with to lips that do not simply touch, but overlap, (maybe even with a "lip" for additional security). Has anyone done this ??? I just got a new iPhone, with Griffin Elan case (recommended by the ATT rep), and have already dropped my phone. Thanks !!!