The shell is firmly seated and the materials are for the price, okay. The window is in place and, yet, at least, clear and free of significant scratches. Holding the shutter, the magnet is indeed sits a bit loose, but remains where it belongs.
However, there is a pretty big chop: The S4 detects the envelope is not correct. At least not without tuition ...
If you close your pocket nothing happens, only "rumdrücken" with something every now and then is briefly activated, the S-View display. The reason is probably that the magnet that sits in the sheath for left under the window, is too weak. This is of course very annoying, I wanted the shell precisely because of the display in the window.
My Work solution:
I have just a second small magnet (from a paper packet) adhered externally to the first (left below the window). Now fold the first fine, but let's see how long the holding.
Conclusion: If you are looking only for an envelope and may waive the S-cover feature, makes for the price nothing wrong. Otherwise, I can not recommend the sleeve unfortunately.