Choices include unlimited text, talk and data plans, shared data plans and prepaid options ... in your area, but AT&T is a good option for those looking for wireless phone service.

When it comes to finding a prepaid phone plan, traditional carriers like AT&T, Verizon and T-Mobile aren ... picks that deliver big savings and great service.

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.