You can activate your AT&T SIM in-store, online, or by contacting customer service. The process is similar for postpaid and AT&T prepaid customers.

Compatible with most AT&T Prepaid mobile phones Redeemable for talk time, text messaging, games and other AT&T Prepaid services $65 value ...

Wondering which plan is right for you? Of course, AT&T has more plans through its Prepaid service, including those with limited data if they don’t need an unlimited option. Here’s a quick ...

When it comes to finding a prepaid phone plan, traditional carriers like AT&T, Verizon and T-Mobile aren't your only options. Here are our picks for the best prepaid phone plans this holiday season.

This priority level is available in AT&T’s mid-tier and high-tier plans, as well as some prepaid options. If you want to upgrade from your entry-level AT&T plan, any of these options will offer ...

We'll also cover the lowest rates possible with this service with a detailed explanation, although fair warning - like AT&T prepaid plans, Verizon's plans tend to be a little pricier than those ...