Can iPhone 5 save US economy? And what will it cost you?

Sarah Coles
iPhone 4s for sale
iPhone 4s for sale

Itsuo Inouye/AP/Press Association Images

Anyone buying the iPhone 5 will be able to use it to do all sorts of clever things. However, according to analysts, that's not all that the phones could achieve: they could even help rescue the ailing US economy.

So how will they do this, and will you end up paying to bail the US out?