Much of the data you'd want to protect is meta data (location and access times).
If you can't trust your network entry point on mobile, you're really just screwed in many un-patchable ways. Mobile-to-mobile mesh networking could help, but I can't imagine that being widespread unless it's done in a layer outside user control or visibility, taking you back to square one.
If you can't trust your network entry point on mobile, you're really just screwed in many un-patchable ways. Mobile-to-mobile mesh networking could help, but I can't imagine that being widespread unless it's done in a layer outside user control or visibility, taking you back to square one.