Hopefully, once NSA releases the open source code for the SE Android, there will be custom ROM's out there, and even ROM's from manufacturers who will include such features for encrypted and more private conversations:
Can't wait to have a Tempest smartphone to destroy my pockets... Everyone knew those vulnerabilities existed, as they are exactly the same issues that affect desktops.
http://www.technologyreview.com/blog/editors/27619/