All good things must come to an end, and that includes the 3G network that has been around since the late aughts. Telcos are supporting and building out vastly superior 5G networks, and they don\u2019t want to spend time and money maintaining older technologies that aren\u2019t used much.\nRemoving older 3G towers makes space for 5G equipment and simplifies network management. Plus, some 3G spectrum can be used for 4G data, although 3G can\u2019t be used for 5G, and 4G still has some years left.\n\nVerizon is cutting off 3G on Dec. 31, 2022; AT&T is turning off its 3G network in February 2022; and T-Mobile has multiple dates in 2022 for the various networks it manages since it is a mix of T-Mobile and Sprint legacy networks as a result of their merger.\nThis shouldn\u2019t really affect too many phones, which went off the market almost as soon as 4G arrived in 2012. However, 3G networking can be found in other devices, like cars, home alarms, security cameras, emergency call boxes, and other devices. As of mid-2019, there were more than 80 million active 3G devices in North America, according to RCR Wireless News.\nMany of these devices were never upgraded to 4G because they gained no benefit from the faster network. Their data traffic was so low as to see no difference between 3G and 4G. One of the biggest potential gotchas for IT is security cameras and alarms that are deployed around offices and facilities. Many use 3G and Wi-Fi as a fallback.\nThis presents one of the most unpalatable scenarios for IT: migrating, replacing, and upgrading hardware with no ROI because all you are doing is keeping things as they were. But that\u2019s also a good opportunity to take inventory and look over old equipment that\u2019s been deployed for a decade or more and see what can be done. Who knows what you will find?\nBack during the Y2K countdown, the CIO of AlliedSignal said that the inventory AlliedSignal was forced to make uncovered redundant systems, zombie systems that weren\u2019t being used at all, and other extraneous systems that came along with numerous acquisitions. He said AlliedSignal went from 100 million total lines of code to 50 million just through consolidation and their IT systems were much cleaner as a result.\nSo take this shutdown as an opportunity to clean house and check systems that might have been deployed and forgotten 10 years ago.