If your home internet plan has a data cap (like DSL or Fixed Wireless), extra data is usually added automatically if you exceed your limit. Add, Change, or Remove AT&T Prepaid Add-Ons
Call 611 from your AT&T Prepaid phone (or 800.901.9878), say "More Options," then "Buy add-ons". Home Internet
For most current unlimited plans, you don't "buy" more mobile data because it's already unlimited, though speeds may slow after a certain threshold. However, you can buy extra .
Choose your desired data package and follow the prompts to complete the purchase.
Prepaid customers can purchase data "Top-Ups" if they run out before their renewal date.
Common options include 5GB for $10/month for data-only plans. How to Buy Online: Sign in to your AT&T Prepaid account . Select Add-Ons .
Buy More Data At&t May 2026
If your home internet plan has a data cap (like DSL or Fixed Wireless), extra data is usually added automatically if you exceed your limit. Add, Change, or Remove AT&T Prepaid Add-Ons
Call 611 from your AT&T Prepaid phone (or 800.901.9878), say "More Options," then "Buy add-ons". Home Internet
For most current unlimited plans, you don't "buy" more mobile data because it's already unlimited, though speeds may slow after a certain threshold. However, you can buy extra .
Choose your desired data package and follow the prompts to complete the purchase.
Prepaid customers can purchase data "Top-Ups" if they run out before their renewal date.
Common options include 5GB for $10/month for data-only plans. How to Buy Online: Sign in to your AT&T Prepaid account . Select Add-Ons .