The background to the closure of the 2G (also known as GSM) and 3G networks is the increasing demand for fast communication which means that the technology in the networks needs to be upgraded. More modern technologies such as 4G and 5G are faster and better able to handle many connected devices and enable calls over Wi-Fi.
Any technical equipment that only communicates over the old networks will stop working and users need to review their communication solutions.
Replacing old equipment updates ageing digital systems with modern and more efficient ones, allowing for lower maintenance costs and reduced energy consumption.