Unfortunately, more slippery than the supplied with the mobile phone black back

The blue of the shell falls a little darker than in the pictures, but is still chic. The fit is as good as with the black back that comes with the phone. But what about this does not fit in comparison is the surface finish. The blue back is noticeably smoother whereby the apparatus is significantly worse in hand. Thus I am afraid, the unit could fall from my hand, I would not buy again and advise against a purchase.