Using a Blackberry to transfer information quickly certainly would work but sending ANY highly classified information is definitely a “NO NO”. There certainly could be other ways. Ever notice many of the photos of Hitlary using her cell phones? She would be totally out of sync without that phone.
This starts to explain how poorly our foreign policy has been going in the last 7 years. These people are sending all their traffic on devices that can be hacked even by third world nations. Even if the Iranians couldn't hack the administrations mobile devices, the Chinese and the Russians can, and would share that data just for fun.