> As mobile carriers seek to upgrade their networks to use the latest technologies, they periodically shut down older services, such as 3G, to free up spectrum and infrastructure to support new services, such as 5G. Similar transitions have happened before. For example, some mobile carriers shut down their 2G networks when they upgraded their networks to support 4G services. Mobile carriers have the flexibility to choose the types of technologies and services they deploy, including when they decommission older services in favor of newer services to meet consumer demands.
