Have you considered the origami long wallet? If you look at how it is constructed, the two sides of the wallet snap together. I often slip my iPhone into that part of the wallet and snap it together. It stays securely and is great for a quick run to the store, etc. It's probably the best option with LV for accommodating the phone. THere's no zipper to stretch and the shape of the wallet can't really be damaged by a phone. This wallet doesn't get a lot of love on the forum, but having been a longtime collector I have to say it is hands down the BEST LV wallet I've ever had. In fact, I sold all my others.