Eir has announced it will begin switching off its 3G mobile network from October, marking the end of a technology that first brought high-speed mobile internet to users in Ireland nearly two decades ago.
The service was initially launched in 2007, transforming mobile connectivity by enabling faster internet access on handheld devices for the first time. Eir’s predecessor, Eircom, secured a 3G licence in 2009, paving the way for wider rollout across the country.
However, the company said the technology has now been largely replaced by newer systems. 4G and 5G networks, which offer significantly faster speeds and improved reliability, have become the standard for mobile users in recent years.
Eir described the decision as part of its ongoing “mobile network evolution,” adding that the move would allow it to focus investment and resources on strengthening its 4G and 5G infrastructure. The company said the transition is necessary to support increasing demand for data and to improve overall network performance.
According to Eir, the majority of its customers will not be affected by the change, as most already use devices and services compatible with newer network technology. Those using 3G-only services will be contacted directly by the company ahead of the shutdown.
The phased switch-off will begin on 1 October and is expected to take place over several weeks. Eir said the gradual approach is designed to ensure a smooth transition and to give remaining users sufficient time to upgrade their devices or services where necessary.
While 3G once represented a major step forward in mobile communications, it has steadily been overtaken by more advanced technologies. The rollout of 4G brought significant improvements in speed and reliability, while 5G has further expanded capacity, enabling faster downloads, lower latency, and support for more connected devices.
Telecommunications providers across Europe have been gradually retiring older networks to make room for next-generation infrastructure. Eir’s move follows this broader industry trend as companies seek to modernise services and meet growing digital demands.
The company has not indicated any disruption for customers using modern devices and said the transition will be managed carefully to avoid service interruptions.
For users still relying on 3G technology, the coming months will require upgrades to ensure continued connectivity once the network is fully decommissioned.
