These 7,800 devices have warrants, but they are locked with the users' passcodes. . . and only the users know the passcodes. My take is that all of these are Apple iPhones and iPads as those are the only ones the FBI cannot unlock with commercially available tools. Even Apple does not have the passcodes or a means of unlocking a modern iOS device.
The US is not the only country that Apple sells iPhones in. If the US gets access, every other government will want it. Shortly thereafter it will be all over.
Apple does NOT want to deal with a back door. There is no way to secure it.
“Even Apple does not have the passcodes or a means of unlocking a modern iOS device. “
NSA does.
And if the FBI can make a legitimate and plausible argument on why any specific phone is important, truly, to National Security...they will have no problem getting NSA to crack it.
Eff ‘em.