2011 dual sim adapter for iphone 4g dual sim holder for iphone 4g twin sim card for iphone 4g double sim adapter for iphone 4g Contact: Rachel Liu Mobile: 0086 13480774266 Office Tel: 0086 13172403940 TheiPhone 4can do plenty, even play nicely on other GSM networks when you’veunlocked it with ultrasn0w, but up until now you couldn’t put two SIM cards inside it. I-smartsim’s newiPhone 4 Dual SIM Adapter Casedoesn’t quite change that – the two SIMs in question aren’t exactly within the iPhone – but it does allow you to easily flip between cards without reaching for theLiquidmetal tool. That’s because each SIM clips into a special adapter that then snakes round the side of the iPhone 4 and into the regular SIM tray. A transparent plastic shell keeps everything safely in place, and there’s no need to cut the cards beforehand. Now, you can’t have both SIMs active at the same time – that’s a limitation of the iPhone 4, sadly – but you can apparently switch between them without having to reboot the Apple smartphone. According to I-smartsim, you can simply pick the correct card from the SIM Applications menu in the iPhone 4′s settings, and after a minute or two it flicks over. You’ll need to be running iOS 4.0.0/4.0.1/4.0.2 for that to work, though