First step would be to find out the 3G subscribers.
And alert them through SMS to upgrade their handset to 4G to continue using data services.
Next concern would be voice.
If you have 2G, there won’t be any issue but if you have have only 4G then you may need to check further if all the 4G subscribers have VoLTE capability.
I was looking to study case to start, and i found this:
Factors that may contribute to the decision of shutting down a 3G network in the context of Ericsson vendor.
Here are a few key considerations:
Network Evolution: The telecommunications industry has been transitioning towards more advanced technologies such as 4G LTE and 5G to meet the growing demand for higher data speeds, capacity, and improved network performance. As a result, older technologies like 3G become less relevant and may no longer align with the network’s long-term strategic goals.
Spectrum Efficiency: Spectrum is a limited resource, and with the emergence of newer technologies, operators have an opportunity to refarm the existing 3G spectrum for more efficient use. Shutting down the 3G network allows operators to repurpose the spectrum for newer technologies, which can provide better quality of service and accommodate more users.
Cost Optimization: Maintaining multiple generations of networks, such as 2G, 3G, and 4G, requires significant investments in terms of operational costs, equipment maintenance, and energy consumption. By decommissioning the 3G network, operators can streamline their operations, reduce costs, and allocate resources more efficiently.
Customer Migration: Over time, the majority of subscribers migrate to newer technologies, such as 4G and 5G, as they offer superior data speeds and a richer set of services. By shutting down the 3G network, operators can encourage customers to upgrade their devices and subscriptions, leading to a more homogeneous and efficient network ecosystem.
Technology Obsolescence: As newer technologies emerge, vendors like Ericsson focus their research, development, and support on those technologies. This means that the vendor may eventually phase out support for older technologies like 3G, making it challenging for operators to maintain and troubleshoot issues in the network.
It’s important to note that these factors are general considerations and may vary depending on the specific circumstances of the operator and their network. Operators typically perform thorough assessments, considering various technical, financial, and operational aspects before making the decision to shut down a network technology like 3G.