[blahbl4hblahtoo]

Personally, if I were really worried about privacy I would use burners or get a lineman's handset. It seems like a smart device that you use all the time is going to have the same problems.

So, yeah you can encrypt the voice channel. That's great. You can send encrypted text messages. The people involved are serious cryptographers. All of it sounds good.

You have to ask your self though, what is it you are trying to do? Who is your adversary? Other people here have mentioned it, but what about apps on the phone? Facebook is still Facebook.