"super-secure nsa-proof" phone...
   this shit is hilarious! will it ever get old? :P~
   smartphones our Achilles heel: so convenient,
   so entirely privacy destroying and inherently vulnerable and insecure
   (as of existing closed baseband systems, proprietary chipsets, poorly
   keyed, weakly ciphered, horribly authenticated, geo location and side
   channel leaking sieves we call handsets today that is...)
   some have suggested the GTA04[0], which i do like, and also liked the
   original GTA01 back in the day. however, the ideal platform would be
   wideband SDR on a coreboot mobile with virtualization support (e.g.
   mobile Qubes OS with MIMO SDR radios and hardware protected key
   management)
   one last comment on smart phones and mobile networks:
   they do offer myriad and many methods to pollute the upstream;
   indications are this delays rather than defends, but still interesting
   and enjoyable none the less *grin*
   0. OpenMoko GTA04 handsets [avail since 2011]
   [1]http://wiki.openmoko.org/wiki/GTA04

References

   1. http://wiki.openmoko.org/wiki/GTA04