I think most DoD agencies have done that. My wife's agency has never allowed private electronics in.
The problem is the people will just go out to their cars or wait until they go home to do their business on the illegal phones. They will do anything to topple President Trump and rip away our attempt to regain citizen control of our Government.
And to access or use an encrypting or non-government method of communications. Thus, anyone that does, is subject to immediate termination. Add 5 year, $50,000 fine to it. AND ENFORCE IT.
It will not be enforced as it is not being enforced now. The people doing this in the FBI and DOJ know they are completely protected. I have enough confidence to state they probably take home highly classified documents so they can use them along with the illegal cell phones. It has already been shown that the Deep State inhabitants do not get into any trouble, and are actually lauded, for their blatant violation of our laws and National security.
If, by some miracle. we get to start putting these people in jail we may have to fight a war with the left as the DNC will surely whip up their ANTIFA and other terrorist troops to "demonstrate" against us citizens. This is part of their Communist playbook.
Start a war with the left......
Okay, what are we gonna do after lunch?