You can purchase an AT&T SIM card at major retailers or directly from AT&T. While some physical "paperwork" comes with retail kits, the most helpful information for setup is available online or in the box's quick-start guide. Where to Buy
: You can find bulk packs or individual cards on Amazon . Setup & Activation Steps buy at&t sim card
: Visit the AT&T activation page or follow the prompts on the included flier. You can purchase an AT&T SIM card at
: Kits are available at Walmart , Best Buy , and Target. buy at&t sim card
: Use the tri-cut card to fit your specific device's tray.