While dual-SIM phones are nothing new, their adoption into the main market is rather slow with a small userbase. Most people either don’t have the need nor see one for having the ability to have two phone numbers tied to a single phone. For many, carrying two devices is more to their liking. Whatever, to each his own. The latest foray into the dual-SIM world comes by way of a partnership between Cellular Abroad and National Geographic. The fruits of their labor,...