The eBay marketplace is currently flooded with used handsets as consumers prepare en masse to upgrade to the Samsung Galaxy S4. If you're still a few generations behind, this could be an ideal time to snap up a Galaxy S III, which remains one of the most powerful Android smartphones on the market.

Meet Australia’s 4G super phone: Android 4.1 Jellybean, quad-core processor, 8-megapixel camera, and 4.8-inch HD Super AMOLED display for high-resolution video, web browsing and gaming. And with Telstra’s 4G network, you’ll also enjoy HD Voice support and double the 4G coverage of other networks.

Equipped with a quad core processor and a clear 4.8-inch display, the Galaxy S III provides stable multitasking to power your productivity. And the speedy new 4G-equipped Galaxy S III model hits Australia on October 9th, complete with Android 4.1 Jellybean. Yet Samsung's best business phone also gets the little things right, like enterprise support and nudging you when you’ve missed a call. Let’s take a closer look.

Optus got the Samsung Galaxy S III 4G first, but Telstra is officially joining the party. It is now accepting pre-orders for the Jelly Bean-enabled phone ahead of an October 9 release. How does it compare to Optus' deals?

Virgin Mobile has quickly followed its parent company Optus into the world of consumer 4G, announcing access to 4G networks for customers with suitable phones. Virgin is also offering the 4G version of the Samsung Galaxy S III, which raises the question: given that the network is identical, are you better off buying it through Optus or Virgin?

Both Optus and Telstra are planning to offer Samsung's flagship Galaxy S III in a 4G variant running Android Jelly Bean. The big differences? Which colours you can buy and how soon you can get it.

Australians love to complain about the cost of phone contracts, but on a global scale we might not be doing so badly. A comparison of plans for the recently launched Galaxy S III suggests that compared to the UK, USA and New Zealand, Australian offers are fairly competitive.

Samsung's long-awaited Galaxy S III got its official launch today. All three major Australian carriers -- Optus (and its Virgin subsidiary), Telstra and Vodafone -- are selling it from lunchtime today, but who has the best deal for you? We've rounded them all up here.

Samsung hasn't officially announced any Australian release plans for the Galaxy S III yet. If you don't want to wait for that to happen, Alex over at Gizmodo has rounded up the offers from importers who will sell the phone in Australia once it officially launches in Europe at the end of the month. Not a lot of choices, but it's an option if you're mad keen to upgrade.