Thinking of getting a new phone on AT&T just to see what it's all about? If you don't dig it, you have a month to return it, right? Unfortunately... no. Not after tomorrow, anyway; AT&T is dropping its device return policy from 30 days to 14, basically cutting the return window in half.
So what happens if you want return your device after the 14 day window? You'll owe AT&T a full ETF (early termination fee) for your remaining contract (read: all of it).