After 4 weeks I then noticed that with my tablet (Samsung Galaxy Tab S) of the edge is bent upwards and protrudes from the device. This happens through the closure of the envelope. This sits relatively tight, or is very stiff. When you close the cover, you have to press on the device the shell at the location. By this pressing edge are sometime after and the device breaks down at the point. The sensor at the point now does not work properly. I am bitterly disappointed that my 400 expensive new equipment after 4 weeks now has a visible damage that impairs its functionality.