The Xperia Z is 4G capable for Australia, so it's compatible with the 1800MHz 4G networks used down under by Telstra and Optus. It also has an NFC chip.
The iPhone 5 is powered by Apple's own A6 processor, has 1GB of RAM and comes with 16, 32 or 64GB of internal memory depending on the model you choose. Apple says the A6 processor is two times faster than the A5 chip used on the iPhone 4S and has two times faster graphics. There's no NFC capability but the iPhone 5 is 4G compatible in Australia. The iPhone 5 also uses a smaller SIM card standard called Nano-SIM.
The Sony Xperia Z will launch in Australia in March 2013 on Telstra, Optus and Vodafone. Telstra has already published a "register your interest" Web page for the Xperia Z, but no pricing has been announced. The Apple iPhone 5 is available now through all major Australian telcos.
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