Apple has been granted an experimental licence by the FCC to test high-band frequencies in California, a first step towards preparing for 5G. Apple plans to test 28GHz and 39GHz millimeter wave (mmWave) signals in San Cupertino and Santa Clara, Light Reading reports. These are expected to be some of the first bands used for 5G.
According to its licence application, the company "seeks to assess cellular link performance in direct path and multipath environments between base station transmitters and receivers using this spectrum". Apple is using equipment from A.H. Systems, Analog Devices and Rhode & Schwartz in the tests.
Source: https://www.telecompaper.com/news/apple-granted-test-licence-for-5g-spectrum--1205250