I use this protective shell now for about a month. Ansich the product fulfills its purpose - it protects against external damage and dampens certainly one or the other case (I have not tried it). The other reviews have been on very good information on the advantages as well as disadvantages. Because as good, it is also to be able to press the power button better now, one can not ignore the fact that the piece is loose on the connections. It is also true that that you can not get as good smartphone with the envelope out of his pocket that was with my Nokia 5800 (also with Silicone Case) wessentlich better. Nevertheless, I wanted to keep the protective cover and will live with the negative characteristics.