How can I get a free AT&T SIM card?

$5 charge for sim card | AT&T Community Forums.

AT&T Prepaid Is Offering Free SIM Kits And $50 Account Credits To BYOP Customers. AT&T Prepaid has launched a promotion geared towards customers who already own a phone. Those who bring their own device to the network can now get a SIM kit for free and a $50 account credit .

Just to let you know, the $25 dollar fee applies to any new SIM cards you order, or for any new phones you order as well. It applies to any order that requires a new SIM card.