A:AnswerNo, like all newer iPhones it does not have a conventional 3.5mm earphone jack. iPhones went to an earphone jack that plugs into the lightning port, the same one used to charge the phone. So you’ll need to get a 3.5mm to lightning adapter to use older wired earphones which they do sell, or buy wired earphones that plug into the lightening port. Again this is the same port used to charge the phone so you cannot charge the phone and used wired earphones at the same time unless you get an adapter that allows that.
A:AnswerOnline I followed the instructions to trade my old iPhone for the 11. I had to bring the phone to Best Buy when I picked up my order. Be sure to backup your old iPhone and delete and remove your Apple ID so the phone is like new. Otherwise you’ll have to do this at Best Buy and it takes long.