We introduced a case with dual SIM card adapter for iPhone 6 two months ago, but if you have more SIM cards, the X-Triple 6 iPhone 6 case with triple SIM card adapter should be more suitable for you.
The X-Triple 6 is a powerful SIM card adapter dedicatedly designed for iPhone 6. As shown in the images, the adapter comes with three SIM card slots in order to hold a nano SIM, a micro SIM and a mini SIM. The nano SIM card fits in the slot of your iPhone, while other two cards are connected by integrated ribbon cable, so you can manage the three numbers via your handset’s main menu. Moreover, the SIM card adapter comes with a custom iPhone 6 case to protect your phone from bumps and scratches. In addition to hiding the exposed adapter, the protective case also allows to store three additional SIM cards and a SIM pin tool.
The X-Triple 6 iPhone 6 case with triple SIM card adapter is priced at €49.90 EURO (approx $52.88 USD). If you’re interested, jump to SIMore official site for more details.