Does the Light Phone III work on Three?

Q: Does the Light Phone III work on Three?

Works. Light's own compatibility checker says the Light Phone III will work with Three in Ireland (it lists Three, Vodafone and Eir; checked 23 Oct 2026). Light's spec sheet lists 4G and 5G only, so calls go over 4G Calling.

Last checked 23 Oct 20264 sourcesLight's checker (23 Oct 2026)

Yes.

Works

Light's own compatibility checker says the Light Phone III will work with Three in Ireland (it lists Three, Vodafone and Eir; checked 23 Oct 2026). Light's spec sheet lists 4G and 5G only, so calls go over 4G Calling.

Calls, texts and data should all work with a Three SIM.

Source: Light's own compatibility checker, checked 23 Oct 2026 (a maker statement, not a network list).

Three (Ireland)

3G: On; no switch-off date announced
2G: On; no Irish operator has announced a 2G switch-off

Light Phone III

2G: Not listed on Light's spec sheet
3G: Not published or not checked yet
4G bands: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 38, 40, 41, 42, 48, 53, 66, 71 + 5G
4G Calling: unknown – Light says the Light III is one worldwide model, but we haven't found a UK or Portuguese network that confirms 4G Calling on it. EE owners on r/LightPhone report 4G service.

Other networks in Ireland

Vodafone Works
Eir Works

Everything about the Light Phone III · All phones on Three · Dumbphones that work in Ireland

Using a Light Phone III on Three? Tell us how it went and we'll update this page. Report your result.

Sources

How we decide: our method.