if you wish to have dual SIM capabilities on your iPhone 5, iPhone 4S or 4, here comes a Dual SIM card adapter that adds dual SIM capabilities to your iPhone.
With the dual SIM adapter your iPhone can have two SIM cards at the same time. This is useful for those who want to use two different numbers on one phone. It also eliminates the hassle of having to change SIM card frequently which may damage the SIM slot of your iPhone.
The dual sim adapter will have the first SIM card inserted into your iPhone’s SIM slot and the second SIM card exposed. But it comes with a case that helps keep the second SIM card attached to your iPhone. Installation is deemed pretty easy, a clip is included below showing how you can get the dual SIM adapter going on your iPhone 5 or 4S. And the adapter is available for $34 on usbfever