1. No JAILBREAK needed, No Software to install, Works on ALL iPhonenew firmware versions This Dual SIM case for iPhone5/4S/4 simplymakes life very simple , you can happily use<br>(note: the hard back case only fits for iPhone 5G and 5S)<br>2. To get the dual SIM cards connected to the iPhone5/4S/4 / aribbon cable is provided that you insert in to the microSIM slot.This then folds around the back of the iPhone5/4S/4 to a placewhere the case holds them in to position.<br>3. The adapter provides a way to switch between SIM cards withoutswitching the iPhone5/4S/4 off which is handy for times when youwant to use more data for example, or switch to a SIM card that hasmore text messages available.<br>4. Let's say you have a unlocked iPhone5/5S/5C/4S/4 and posses morethan one network simcard and wish to swap the network simcardsaround from diffrent providers be it any reason you like.<br>5. Currently by phyically switching network simcards manually canget complicated and become time cumsuming and can cause damage tothe iPhone5/5S/5C/4S/4 sim gate and internal click inmechanism.<br>6. How to set-up your DUAL SIM adaptor<br>- Home ==&gt; settings ==&gt; Phone ==&gt; SIM Applications: selectyour desire SIM card<br>(If you don't want it to select SIM card for you when the signal islow, please don't select "auto/SW)<br>7. Note once you've chosen to another sim card, it will have amessage "No SIM Card installed", please wait 1 or 2 minutes, itneeds aound 1 ~ 2 minutes to search, during this time, "No SIM"will appear in the top right of your iphone's screen.<br>8. Support UMTS/3G Cards and 3G Networks<br>9. STK Menu:A very simple Powerful STK menu to select defaultnumber for making calls, use any of the 2 numbers to make call atany time and divert the primary number to receive calls on bothnumbers.<br>10. Check out the following website which might do some help.Youtube Video:http://www.youtube.com/watch?v=Dd9aqyW0_Vo<br><br>Product particular introduction:<br>1. Two numbers in one phone(Most practical function design).<br>2. Special double modes function.<br>3. Invisible number - Temporary not connected function.<br>4. Extended support to multi SIM card.<br>5. Maintain Original SIM card STK menu function.<br>6. Two number auto switch on line, easily set the on line time.<br>7. Display the on line number in screen.<br>8. Keep Call records function.<br>9. Support GSM and 3G-USIM card.<br><br>Compatible with:<br>iPhone 5/4S/4(Firmware All Versions ) This is an UPDATED Firmwarethat SUPPORTS iPhone5/4S/4 without Rebooting( Please if yournetwork SIM card is old version then for iPhone5/4S/4 you might todo air-Plane Mode when you switch)<br><br>Package Included:<br>1 x Dual SIM Card Adapter<br>1 x Back Case for iPhone 5(Black)<br>1 x R-SIM Nano SIM Card Adapter