Does the Light Phone III work on Eir?
Yes.
WorksLight's own compatibility checker says the Light Phone III will work with Eir 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.
You should be able to put a Eir SIM in the Light Phone III and make calls, send texts and use data.
Source: Light's own compatibility checker, checked 23 Oct 2026 (a maker statement, not a network list).
Eir (Ireland)
- 3G: Being switched off now: phased from 1 October 2026 (Donegal first) to 6 November 2026
- 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.
The same applies to networks that run on Eir: GoMo, Lyca Mobile. Smaller networks sometimes handle 4G Calling differently, so check with them too.
Other networks in Ireland
Everything about the Light Phone III · All phones on Eir · Dumbphones that work in Ireland
Using a Light Phone III on Eir? Tell us how it went and we'll update this page. Report your result.
Sources
How we decide: our method.