In the lead-up to the iPhone 5's launch we've wondered more than once whether the device would ship with 4G connectivity, and we're happy to report that the rumours were spot on. The iPhone 5 is indeed a 4G 'world phone' (after a fashion) offering LTE in numerous countries. What's important to note however is that different countries (and carriers) are receiving differing versions of the device tailored to their specific networks. Three alternate LTE models are being sold internationally by Apple, with Australia serviced by the A1429 GSM variant. The upshot: an Australian-purchased iPhone won't offer 4G speeds absolutely everywhere in the world, but you'll be able to access 4G in Australia (thankfully) plus Germany, UK, Japan, Korea, Hong Kong and Singapore. You can see all the details on Apple's web site, and Optus has separately confirmed the news this morning as well.