Apple iPhone 5 to connect to 4G via HSPA+ says China Unicom64
The slide has a blank where a photograph of the new Apple iPhone would go. The only details about the new phone is that it will run over HSPA+ pipelines. Those networks have a theoretical maximum download speed of 21Mbps which allow carriers to call it a 4G network. Inside GSM versions of the iPhone 4, iPhone 3GS and iPhone 3 is a WCDMA radio that provided maximum speeds of 7.2Mbps while the original Apple iPhone ran on a 480Kbps EDGE network.
In the States, AT&T and T-Mobile offer HSPA+ service, but of the two, only the former is an Apple iPhone vendor. Verizon, the other carrier to offer the phone in the U.S., uses LTE technology for 4G. Back in April, Tim Cook-then Apple's COO-said that while the company has explored using the technology, there was no rush to add LTE connectivity to its products.
source: Macotakara (translated) via AppleInsider