Also included in these filings are numerous test reports which provide readings to ensure the radio waves generated from these devices do not cook us during everyday use. Model PM23300 is the AT&T version of the 8X and the test reports showed the device was installed with Windows Phone 8, build 9720.
Model PM23100 reveals more or less the same information, but shows frequencies used by Verizon plus in-depth reports about Wi-Fi and Bluetooth performance.
The timing could not be better. As the HTC 8X is sure to attract a lot of interest. The device looks to be very responsive and capable as seen in the video we looked at recently.
source: FCC (1, 2)