Black, Boeing's mysterious secure smartphone, shows up at FCC10
The filing states that the Boeing Black is intended for "governmental agencies and their contractors to ensure that data and voice communications undertaken by their respective employees are transmitted and stored in a highly secure manner". Apparently, Boeing wants to mitigate the industrial espionage.
The hardware specifications of the Boeing Black are unknown at the moment. All we know is that the smartphone will come with dual SIM support. The device will be LTE-enabled and will support the 700/1700/2100MHz bands. It was already rumored that Boeing is working on a secure Android device two years ago, so it is very likely that the Boeing Black will run Google's mobile platform.
source: FCC via SlashGear