The 3G sunsetting has already begun, and LTE is already here. As you know, it’s important to have a strategy to stay ahead. Here are some important dates confirmed from AT&T and Verizon to keep in mind. By 2022, both cellular carriers have confirmed their 3G networks will no longer be in service. Specifically, AT&T’s 3G/HSPA network will shut down in February 2022. Later that year, in December 2022, Verizon has confirmed it will do the same with its 3G/CDMA network.