This guide walks you through activating an eSIM and SIM card through AT&T. You can follow this guide whether you have an AT&T prepaid or postpaid plan from the carrier or a prepaid card from another ...

For this article, I'm going to focus on just a few: Boost Mobile, Cricket, Mint, Google Fi Wireless, US Mobile, MobileX, Tracfone, Metro by T-Mobile, Total Wireless, Verizon Prepaid and AT&T Prepaid.