iPhone 4 Dual SimCard spotted and sells for US$28.99 its features are that you can use one iPhone 4 for with 2 simcards, no need to cut your sim card, STK menu and comes with a crystal case to protect the dual case along with your iphone. Its Currently available for firmware Firmware 4.0.0, Firmware 4.0.1, and Firmware 4.0.2.
Easy setup menu on iphone 4 Home ==> settings ==> Phone ==> SIM Applications: select your desire SIM card (If you don’t want it to select SIM card for you when the signal is low, please don’t select “auto/SW). Note once you’ve chosen to another sim card, it will have a message “No SIM Card installed”, please wait 1 or 2 minutes, it needs aound 1 ~ 2 minutes to search, during this time, “No SIM” will appear in the top right of your iphone’s screen.
more images after the cut.
you can buy here