I just got a 4s for Christmas and was wondering what I could do with my old 3GS. I unlocked and sold my dads old 2g on eBay two years ago and the transaction seemed to work out alright.
Now I am wondering if there would be a difference now if I just sold the phone as is to a person on eBay/Craigslist and unlocking it before selling it.
My main question is if I sell it locked, does the buyer have to purchase a new sim under AT&T or can they use my sim that's in there? If I unlock it, can someone with a regular AT&T sim in another smartphone just take theirs out and put it in the iPhone and continue using it as if nothing happened? Same goes for tmobile.
I just want to make sure the buyer won't have any questions that I can't answer at the time of sale.
Now I am wondering if there would be a difference now if I just sold the phone as is to a person on eBay/Craigslist and unlocking it before selling it.
My main question is if I sell it locked, does the buyer have to purchase a new sim under AT&T or can they use my sim that's in there? If I unlock it, can someone with a regular AT&T sim in another smartphone just take theirs out and put it in the iPhone and continue using it as if nothing happened? Same goes for tmobile.
I just want to make sure the buyer won't have any questions that I can't answer at the time of sale.