: Kits are available at Walmart , Best Buy , and Target.
You can find 3-in-1 SIM kits (Standard, Micro, and Nano sizes) at these locations: buy at&t sim card
: Use the tri-cut card to fit your specific device's tray. : Kits are available at Walmart , Best Buy , and Target
: Ensure your phone is unlocked and compatible with the AT&T network. : Kits are available at Walmart
: Visit the AT&T activation page or follow the prompts on the included flier.
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