The Global 2G and 3G Shutdown Is Accelerating
Mobile network operators around the world are retiring 2G and 3G networks to release radio spectrum for 4G and 5G services. By mid-2025, more than 278 network shutdowns had been completed, planned or were in progress across 83 countries, with almost half of operators already switching off 3G entirely.
For over thirty years, 2G and 3G supported mobile communication, SMS messaging and early data connectivity. They also formed the backbone of early M2M and IoT deployments such as vehicle tracking, alarm systems and remote monitoring devices.
Today, those legacy networks are disappearing rapidly.
According to the Global Mobile Suppliers Association, the shutdown of legacy mobile technology represents one of the largest infrastructure transitions in telecommunications history.
Why Operators Are Switching Off 2G and 3G Networks
Spectrum Reallocation for 4G and 5G
Modern networks require wider bandwidth and greater efficiency. By closing legacy services, operators can reuse low-frequency spectrum to improve coverage, capacity and performance for LTE and 5G networks.
Lower Operating Costs
Running multiple generations of mobile infrastructure is expensive and energy intensive. Consolidating networks reduces operational complexity and improves reliability.
Improved Performance
4G and 5G networks provide:
- faster data speeds
- lower latency
- better indoor penetration
- support for significantly more connected devices
Legacy technologies cannot support the demands of modern connected services.
Global Shutdown Timelines
The timing varies by region, but the direction is clear worldwide.
North America
United States completed nationwide 3G shutdowns in 2022, with 2G largely retired by 2025.
Canada is phasing out 3G by late 2025.
Europe
Germany shut down 3G in 2021 and plans to retire 2G by 2028.
The United Kingdom plans to phase out both 2G and 3G by 2033.
France is targeting 2G shutdown by 2026.
Asia and Other Regions
Many countries are accelerating shutdowns to prioritise LTE and 5G. Vietnam is targeting 3G sunset by 2028, with similar programmes underway globally.
Within a few years, widespread 2G and 3G coverage will no longer exist in most markets.
Impact on IoT and M2M Devices
The shutdown has significant consequences for businesses operating connected equipment.
Many IoT devices were designed for long lifecycles and still rely on 2G or 3G modules. Once networks are retired, these devices will lose connectivity entirely.
Industries most affected include:
- smart metering
- vehicle telematics and fleet tracking
- industrial monitoring
- security and alarm systems
- environmental sensors
- remote telemetry
Without migration planning, companies face service outages, emergency hardware replacement and increased maintenance costs.
What Businesses Should Do Now
Audit Your Devices
Identify which equipment uses 2G or 3G connectivity and where it is deployed.
Migrate to Modern IoT Technologies
Replace legacy hardware with devices supporting LTE-M, NB-IoT, 4G or 5G connectivity.
Use Multi-Network IoT SIMs
Multi-network connectivity improves resilience and reduces dependence on a single operator.
Future-Proof Your Deployment
Choose solutions that support:
- LTE-M
- NB-IoT
- 4G
- 5G
- eSIM or iSIM technology
Plan Early
Operators often provide limited notice before shutdowns. Early migration prevents disruption and avoids rushed upgrades.
The Future of IoT Connectivity
The retirement of 2G and 3G marks a major shift toward modern connectivity infrastructure. As spectrum is reassigned, networks become faster, more reliable and capable of supporting large-scale IoT deployments.
The transition enables:
- massive IoT deployments
- improved reliability
- real time monitoring
- smart infrastructure
- global eSIM adoption
For businesses operating connected devices, migration is no longer optional. Planning now ensures continuity and prepares organisations for the next generation of connectivity.
