The Markey cell phone surveillance information, in charts. Click to enlarge. See the letters for more detailed information here. (Sprint's 2012 response is here.)

How long does your cell phone company keep your communications, associational information, and location history?

Note: CDRs means 'Call detail records' and includes the information that's on your bill, like who you called and when; read more on CDRs here. See here for questions about AT&T's declaration: do they keep our CDRs for five years or 26? For information about (d) orders, click here. Finally, read this to learn about why the subpoena standard needs to go.

What kind of legal process does your cell phone company require before it will turn over your information to the cops?