The iPhone 5 has 4G LTE connectivity, a must-have feature for a high-end smartphone these days. It uses a single LTE chip (rather than two) for voice and data, an engineering decision that helped reduce the phone's bulk. It also supports more global cellular networks, including HSPA, HSPA+, and DC-HSDPA. Wi-Fi got a spec bump too. The iPhone 5 supports dual-band (2.4 GHz and 5 GHz) 802.11n wireless with a theoretical maximum speed of 150 Mbps.