Anyone know what Snowden types use for mobile? Tracfone? CM variant? Maemo?
Any smart person would get a cheap chinese knock-off phone based on a MediaTek MT6592 with a bunch of RAM, install vanilla linux on it, and run YateClient or Plasma Mobile. Combined with VPN, data-only, and VoIP, this would be an enormous pain for anyone to be able to properly track.
Airplane mode.
I must admit feeling that we have lost the fight when protecting ourselves from governments, considering the resources they have.
My fight now is trying to opt out of corporate invasion of my privacy. I am also concerned that the privacy of school children, using school infrastructure, is poorly protected against profile data that will follow them forever.
However, if the teacher is incapable of separating personal life from work, there could be repercussions.