Wallet cases do protect phones. By integrating the phone directly into a larger wallet, the phone is protected by the wallet's sheer bulk. Smaller wallet cases with storage for cards and cash built-in offer another, slimmer option. However, even a slim wallet case will still add heft and make it difficult to carry in a pocket. In this buying guide, we focus on the best thin iPhone cases for the 12; they're the thinnest available and make carrying your phone easy and convenient to use.\r