The case holds the Nikia Lumia 520 perfectly- it clips onto a pre-attatched backplate and the phone just needs sliding in to lock into place. There is a magnetic clasp, which given the thickness of the case is unlikely to have an adverse effect on the phone itself. The wallet section is able to hold a card in each of it's two pockets and some carefully folded notes: any more contents in the wallet will make it difficult to close neatly. The seller "Mobicases" delivered this high quality item the very next day: and all for the pleasing sum of £1.99! A very impressive product: well worth a full five star rating.