[javajosh]

The security of a system is only as strong as it's weakest link, which in this case is the system software (OS and drivers) and hardware. Imagine that baseband-hardware has been fitted with a backdoor that simply says "encrypt all textual input and send to this address". Even better to piggy back to a well-known endpoint, like Facebook, then compromise that (which is easy if you're a state actor). The only thing that really saves us is that it's just too much data! (Well, that and the fact that most of us are happily playing the games of commerce, and not particularly interesting to state security services.)