According to iDealsChina the iPhone 5 will not hold one, but two SIM cards to support dual phone lines. This sounds very strange and we think iDealsChina could have misinterpreted the information from their source.
The iPhone 5 is rumored to include a Qualcomm Gobi cellular/data chipset (just like the Verizon iPhone) that allows for both GSM and CDMA connections in the same phone. Perhaps this is what they mean by dual SIM-cards? Perhaps, but they add that the iPhone 5 will support dual phone lines.
iPad Air 2
Dual Phone lines come in handy if you have a personal and business line that you want coming to the same phone. What if you could have service from both Verizon and AT&T in the same device, and use the service with better coverage at a respective time? Would you find this useful?
iDealsChina, a Chinese parts reseller, is the site that brought us a purported 4 inch iPhone 5 bezel and iPhone 5 design images. The site has a mixed track record but correctly pinpointed iPhone 3G and 4th generation iPod nano design changes. They incorrectly reported that an iPhone nano would launch in 2008.