In an announcement made by its CFO John Stevens, AT&T is said to be shutting down its 2G network by the end of this year. This means that they have been able to successfully move its customers off their 2G network. In just the past 12 months, they were able to move a total of six million users. The remaining number of 2G users is said to be made up of connected devices.
When probed further on why their decision to shut down the network came earlier than the original plan, Stevens said that AT&T was still spending "a lot of cost" just so a 2G network can be operational. Even though they have already decommissioned the network in areas where 2G is no longer used as much, they are still spending for the network. In addition with decommissioning 2G, AT&T has repurposed the spectrum for 4G LTE coverage. This is something AT&T intends to do with the remaining 2G spectrum too.
Considering there is a strong demand for 4G coverage and device support in the past few years, the number of users and devices using 2G service has also declined immensely. This gives a perfect reasoning as to why it would better for AT&T to shutdown its 2G network and repurpose the spectrum so that its 4G coverage could be largely improved. After all, who still uses 2G in this day and age?