Actually this is exactly the kind of thing this data would sniff out. It would capture whichever cell towers you interact with (home, work, etc) and paired with data from your friends & their call logs could easily pinpoint who you are. Kind of amazing from an analytical standpoint but pretty scary for privacy.
Do not appear on any camera/picture.
Do not purchase anything with any kind of card.
Do not drive a car (License plate recognition systems are getting scary.)
Etc...
You sound like a person who hasn't moved a long distance from their family.
Also, you can't use a cellphone without them knowing who you are with high certainty. It only takes 3 points of location data to identify a person the vast majority of the time[1]. Using a cell phone that you paid for with cash is insufficient.
[1] http://www.livescience.com/28353-anonymous-phone-data-not-an...
What that has to do with anything, god only knows, unless you meant something like '100 miles away from the border', and even then I'm at a loss.
Go visit a flyover state sometime. Most of the country's very different than SV/the northeast corridor/other modern urbanized area, and I wouldn't live there if you paid me.
[1]: https://www.aclu.org/know-your-rights-constitution-free-zone...
Not necessarily right, but that's how I go there.
So actually 19%, yes.
Or the 20% of the population of the _US_ that don't use the internet.
You can even still use a cell phone, if you want - just buy a prepaid mobile with cash.
And aside from awkwardness with your friends, you might even find such a life quite livable. You'll experience no material hardship.