With trepidation, I put the Invisible shield on my iPhone 4 last night - I love my bumper case, but it did push out the edges of my temporary, old cheaper screen protector. I was unable to avoid a little looseness on some edges, but, after waiting the suggested 12 hours to dry, I am happy to report it is staying on fine. I still have some concern that over time it could wear, and I think I cannot take the bumper on and off too often. Overall, I am pleased - because it may be the best choice for a screen protector with the bumper. I will not risk scratches. BTW, the front and back set is called full body. The one with some side protection is called Maximum, I think. I don't know, but the Maximum could be better or worse with the Bumper - it might hold down the edges, or it might have more spots for the Bumper to pull at.