Let's say u want to buy a new smartphone from AT&T and renew your contract for another 2 years.
Now, if u don't like the smartphone after a week and if u want to return it I know u can return the smartphone and there will be a restocking fee.
But what will happen to the 2-year contract which you would have renewed at the time you got the phone? Will that also be nullified and you go back to clean slate where you started?
OR Are u still obligated for the 2-year contract even though u canceled and returned the device within a week?

I am looking for an answer specific to this question as opposed to links pointing to AT&T policy.