For those who use iPhone and two SIM cards, another cell phone may be inconvenient when you’re on the go. Need a better solution? You may like to use GoodTalk to turn your iPhone 5/5s into a dual SIM, dual standby smartphone.
The GoodTalk is an innovative and practical Bluetooth communication accessory that works with iOS 7 devices, including iPhone 5/5s, iPod touch 5G, iPad Air, iPad 4/3/2 and iPad mini. As shown in the images, the Bluetooth device sports an ultra compact design along with multiple optional colors and only weights about 30g, so you can easily take it and your iPhone with you. GoodTalk features built-in GSM module. Just inserting a SIM card into the Bluetooth device, and creating communication with your iPhone, you can turn the phone into a dual-SIM, dual-standby smartphone, moreover, its free cloud storage records your missed calls and messages and shows them via custom app. Apart from that, the GoodTalk doubles as a wireless tracker that securely keep your item with you, and built-in rechargeable battery lasts a week of use.
The GoodTalk Bluetooth device comes in multiple colors and is priced at ¥359 (approx $59 USD), but there is no word on global availability at present.
via Weibo
I got one of these from here and its great… http://www.magic-sim.com/product/id/44/GoodTalk_DUAL_SIM_DEVICE_-_2_SIMS_ACTIVE_AT_THE_SAME_TIME!.html