Earlier this week, to many customers urging them to buy new phones if they want to keep using its network services. If you didn't know, AT&T plans to discontinue its 3G network, which means that phones that don't support 4G data and voice calls will no longer work on AT&T.The problem is that AT&T's 3G network won't stop working until at least February 2022, so there's plenty of time for people to switch to other phones. Now, the email sent by AT&T was completely tone-deaf and lacked important information like the fact that customers have plenty of time to buy phones that ...