When I bought my second D3 in 2015 it came with a screen protector, this seemed like a good idea to me so I bought another one for the other D3. In the intervening nearly five years I have broken two, both on the same camera. As the camera came with a Giotos glass screen protector, when the first one broke I bought another one of the same make now that one has broken too. Neither suffered the kind of impact that would break the camera's screen, what happened was that the edge of the protector got chipped and then a crack developed across the whole thing. I am still not sure what caused the original chip at the edge but I can say that I am wary of this particular make. The edges seem to be proud of the back of the camera and very vulnerable to being knocked. The question I now have to answer is, do I buy a replacement or do I use the camera without? The D3 is now an old camera, a very capable one but its successor's, successor's replacement is promised for next year.