Changing address with USCIS
 

Hey everyone!
Just a.quick question.

I tried calling USCIS to.change my address since I moved & they told me, I cant change by phone if I don't have any pending case. So she told me to do it online..

I did it online and got.this receipt ARF something.
My question is, is this the only thing I have to do? Why didnt I receive anything from them that I changed my address?