2Phone Dual Standby SIM adapter case for iPhone 4 Having two SIM Cards active simultaneously on your iPhone 4 is no longer a dream! http://www.simore.ch The 2Phone dual SIM card adapter is the only device in the world which allows to simultaneously use a micro-SIM and SIM (standard format) in the iPhone 4. iPhone 4 users can now separate private life and professional life without having to carry two mobile phones. The dual SIM card adapter 2Phone is exclusively dedicated to the iPhone 4. Ideal for businesspeople, this innovative concept now allows iPhone 4 owners to use 2 SIM cards (SIM and micro SIM standard format) and have two numbers active at the same time. This dual SIM card adapter can make and receive calls on both SIM cards simultaneously.