4 in 1 (Dual SIM Card Adapter + TPU Case + Tray Holder + Sim Card Tray Holder Eject Pin Key) for iPhone 6s Plus 1. Dual SIM Adaptor + TPU Case + Tray Holder+ Sim Card Tray Holder Eject Pin Key). 2. Two SIM Cards in one mobile, single standby. 3. Auto-Switch between SIM Cards. 4. Enable to edit switching time. 5. Enable to edit display name of SIM which can be showed on iPhone screen.