Boeing is launching a self-destructing smartphone to help spies, diplomats and others keep secrets secure.

Don't even think about trying to open or tamper with the Boeing Black phone, the company warned.

Secretive: The Boeing Black smartphone.

"There are no serviceable parts on Boeing's Black phone and any attempted servicing or replacing of parts would destroy the product," Boeing said in documents filed with the US Federal Communications Commission.

"The Boeing Black phone is manufactured as a sealed device both with epoxy around the casing and with screws, the heads of which are covered with tamper-proof covering to identify attempted disassembly.