The iPhone 5 supports 72Mbps at 2.4 GHz, but 150Mbps at 5GHz. Most of Apple’s computers have two antennas, so they can do 144Mbps at 2.4GHz and 300Mbps at 5GHz.
Is iPhone 4 5GHz compatible?
No. From Apple’s iPhone Specs page (http://www.apple.com/iphone/spec The IPad is the only iOS device with 5GHz 802.11n support, probably due to the additional antenna requirements. Update: The iPhone 5 and fifth-generation iPod touch, released in September 2012, have also added 5GHz Wi-Fi support.
What is a band steering?
Band steering is a technique used in dual-band WiFi deployments to encourage dual-band client devices, such as most modern smartphones, tablets, laptops, and PCs, to use the less-congested and higher capacity 5 GHz band. As with many modern WiFi features, however, band steering is often overhyped.
What is TKIP and AES?
TKIP, or Temporary Key Integrity Protocol, was meant to replace the insecure WEP encryption system in Wi-Fi networks. TKIP also turned out to be insecure, so a new standard called WPA2 was created, which uses AES, or Advanced Encryption Standard. AES is much more secure because it uses longer encryption keys.