You can get 10GB for $15 as either a one-time purchase (valid for 30 days) or a recurring monthly add-on. How to Buy: Sign in to your AT&T wireless add-ons page. Select the line you want to update. Find Hotspot data under "Get new add-ons." Choose Monthly or One time and select Add to device .
Choose your desired data package and follow the prompts to complete the purchase. buy more data at&t
Prepaid customers can purchase data "Top-Ups" if they run out before their renewal date. You can get 10GB for $15 as either