Kumishi Dual SIM Card Adapter with a Back Case Cover for iPhone 6 (Black) 1. This Dual SIM Card Adapter with a Back Case Cover allows you to use iPhone with two SIM cards 2. An interface ribbon cable connects the nano SIM card tray (SIM 1) to a standard SIM card adapter (SIM 2). It folds around the back of iPhone to a place where the case holds them in to position 3. The back case has a raised area to keep the second SIM card safe and secure and also prevents your For iPhone from getting possible back scratches 4. Now you can switch between SIM cards and handle all your calls on the same phone 1. Two SIM cards in one iPhone, single standby