If your phone plan includes mobile to mobile calling it does.If you're using prepaid it generally won't unless your on the $1 a day mobile to mobile plan.
The easiest option would be to go to an AT&T corporate location with both phones and have the use the UME or universal memory exchanger to transfer contacts. Call customer care at 800-331-0500...
Yes because ATT phones have sim cards, so you can simply transfer your sim card to another phone. However, the ATT website doesn't sell all their phones for use with gophone plans, so depending on...