when setting up iPhone do you insert SIM card before or after connecting to computer
I preordered the iPhone 6s and received it in the mail. I wanted to set it up but got confused since the past i always got my phones from AT&T. Do i need to somehow remove the SIM card from my old iPhone and put it into the new one and then connect it to my computer to set it up or is it suppose to be done another way.
iPhone 6s