Contained within this module is the BCM4334, like we saw last year in the iPhone 5. It includes IEEE 802.11 a/b/g/n single-stream MAC/baseband/radio, Bluetooth 4.0 + HS, and an integrated FM radio receiver.

It is designed to be used with external 2.4 GHz and 5 GHz front-end modules, which include power amplifiers, T/R switches and optional low noise amplifiers.

Apple chose not to upgrade the iPhone to the latest Broadcom chipset to take advantage of their new 802.11ac base stations.