Irish telecoms operator Eir has confirmed that it will begin the shutdown of its 3G network on October 1.

According to the telco's website, its 3G network will no longer be supported as the carrier shifts its customers over to 4G and 5G instead.

This shutdown will start in the county of Donegal, with other counties to follow as part of a phased process.

Eir didn't specify the number of its customers that still use 3G, though it did note that "only a small number of customers use 3G for data, calls, and texts."

The network has warned customers still relying on 3G that their data services will stop working, while calls and texts will move onto its 2G network.

Telcos across the world have gradually moved away from their legacy 3G networks in favor of the more technologically advanced, cost-effective, and energy-efficient 4G and 5G networks.

Eir, which has an estimated 1.6 million mobile customers, didn't specify an exact timeline for when its 3G network will be fully shut down nationwide.