attention to the back of the phone ..

It snaps right and follows the contours perfectly.
It has been nearly six months since I use it well and protects shock: nothing to report on that.
HOWEVER careful!
Fine dust slip between the shell and the back of the phone: results from scratches and beautiful brands of wear (friction hull?) Are present on the mat back of the phone.
It's very embarrassing, but I do not know if it is a specific hull problem or if it is valid with all the shells of the phone.
I takes only two stars because the shell really damaged my aesthetics One X discreetly: I realize it too late ... I will not hesitate to change the hull.