Never suffer from dual phone stress again. Whether you need an extra phone for work, or just for screening calls from mother, you can now use two SIMs in the same phone with the ingenious Dual Sim Case, allowing iPhone 5 users the chance to have two SIMs installed at the same time. No more cluttering up of your pockets with two phones & never knowing which one to answer. Use two SIM cards in one iPhone – simply flick the switch at the back of the case & with one click you can switch between the cards. The case requires no software installation, no tool for switching between the two SIM cards, It accepts both standard SIM & Micro SIM cards. Simply activate the switch on the outer case to change the SIM in use. It couldnt be easier, or indeed more useful.