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The iPhone 5 is packed with new wireless tech. Added to the iPhone's communications repertoire is HSPA+, DC-HSDPA, and LTE. It also supports 802.11a/b/g/n, with 2.4GHz and 5GHz 802.11n support.
To save space inside the handset there's now a single chip for voice and data, and a single radio chip.
Image source: Apple.