- The 2G/3G network shutdown aims to free up spectrum for 4G and 5G.
- Devices IoT in key sectors they will have to migrate to continue operating.
- There are alternatives such as NB-IoT and LTE-M to ensure connectivity.
- Planning the transition is essential to avoid disruptions.

The shutdown of 2G and 3G networks is an issue that is shaping the evolution of connectivity in the global technological ecosystem. With the advancement of technologies such as 4G and 5G, many mobile operators have begun the gradual dismantling of these older networks, which poses a challenge for multiple sectors. Companies that still depend on these services must prepare to ensure the continuity of their operations.
In this article, we'll delve into the reasons behind this outage, the implications for IoT, and what strategies can be implemented to ensure a seamless transition. If your business or devices rely on 2G or 3G connectivity, the information you'll find here will be very useful.
Why are 2G and 3G networks shutting down?
2G and 3G networks have become obsolete compared to new technologies. Operators have taken the decision to retire them in order to optimize the use of the radio spectrum and improve the efficiency of communication infrastructures. The main reason for this shutdown is the need to free up space in radio frequencies for the expansion of 4G and the consolidation of 5G.
Another key aspect is that The maintenance of these networks is expensiveAs fewer devices rely on them, keeping them active is an expense that is not economically worthwhile for operators. For this reason, they have decided to gradually dismantle them.
Impact of network blackout on IoT

The Internet of Things (IoT) is one of the sectors most affected by this change. Many M2M devices (Machine to Machine), industrial sensors, remote control systems and alarms still rely on 2G and 3G for connectivity. If they do not adapt to new technologies, these devices will become inoperative.
Within the scope of IoT, some particularly affected sectors are:
- Transport and logistics: GPS trackers and telemetry depend on mobile networks for communicating.
- Security: Connected surveillance cameras and alarms that still operate with 3G.
- Measurement systems: Smart meters for energy, gas and water.
Technological alternatives after the blackout
To ensure the continuity of IoT devices, it is necessary to migrate to new technologies. Among the most viable options are:
- LTE 4G: Provides higher bandwidth and lower latency.
- NB-IoT and LTE-M: Ideal for IoT devices, as they have lower energy consumption and better indoor penetration.
- 5G: Although its adoption is still limited, it promises a more robust ecosystem.
- 0G Networks: Like Sigfox, designed for IoT devices with low data requirements.
How to prepare for migration
To avoid service disruptions, it is crucial that businesses and individuals begin planning for the transition early. Some recommended actions include:
- Evaluate current devices: Identify which devices still rely on 2G/3G.
- Consult with the operator: Know the exact dates of the shutdown in each region.
- Update hardware: Replace old devices with 4G/5G compatible models.
- Explore LPWAN SolutionsTechnologies such as NB-IoT can be an efficient alternative.
Some companies are offering assistance to make the migration smoother, ensuring interoperability with the new networks. Digital transformation is constantly evolving and the disappearance of 2G and 3G networks is a necessary step to make room for more advanced and efficient technologies. Companies and users who take action now will avoid connectivity problems in the future and will be able to take full advantage of the benefits of the new networks.
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