If Snowden was an ex-colleage of mine, I suspect I or my co workers probably combine location data with network attach/detach messages, and can filter out "known blackspots" on a per network/carrier basis.

> Your "Recreational Paranoia" should include rebooting your iPhone more often.

Ah ha! But my recreational paranoia hobby includes having a perfectly normal "daily driver" phone - which gets left at home way more often than other people's phones.