After several months of use: Functionally extent OK, the integrated metal plate above the display provides security, magnetic lock works. Negatives: The footbridge over recess for volume control and on / off switch is broken up quickly, no sufficient tensile strength of the plastic material used. The position securing the phone wakes due to the remaining small residual socket on the top left for the future doubts. The surface material can be relatively easily damaged by addition eg by fingernails.