I know a number of people working - traveling with at least 2 fones. When I run a project I need a local number, usually a prepaid card, but also need to carry at least on of my 'home' numbers. I think a dual SIM would be a very marketable item. What would be the biggest technical issue in building something like this??
I am trying to hunt down a Bene Duo - but my initial search not to fruitful.