Hey Guys, I am looking at Lens Kits for my iPhone 4S, the ones where you get a Fisheye, Macro and Wide Angle. I have been looking at cheap ones on Amazon but reviews say the magnetic rings don't stick to the phone. I have also seen others that slide over the corner but not sure if this will be a problem for my front and back screen protectors? Any kits that people suggest? Is there a kit that works with both the 4S and 5? Thanks in Advance!