My bought 4 months ago BookBook of TwelveSouth I have now definitely relegated to the closet because of the proximity sensor of the iPhone just made problems and making phone calls became more stressful or annoying. Well I bought the leather case of Cadorabo. I must confess that I am more than surprised. For only 16.90 Euro I hold a high-quality processed protective sheath in my hands, which offers the same protection and comfort as the BookBook. And the best part: The proximity sensor now works properly again, because the iPhone is snapped into a holder and the entire display surface is free (at BookBook the sensor is affected by a Lederrrand).
Compared to these BookBook leather case has "only" 2 instead of 3 credit card pockets. But honestly: We are talking still about an Iphone and do not have a classic wallet, where you can put in a cell phone.