Does the Light Phone III work on NOS?
Yes.
WorksLight's own compatibility checker says the Light Phone III will work with NOS in Portugal (it lists MEO, Vodafone, NOS and Nowo; 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 NOS SIM.
Source: Light's own compatibility checker, checked 23 Oct 2026 (a maker statement, not a network list).
NOS (Portugal)
- 3G: Switched off (2024)
- 2G: 2G stays on for voice calls nationwide
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 Portugal
- MEO Works
- Vodafone Portugal Works
Everything about the Light Phone III · All phones on NOS · Dumbphones that work in Portugal
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Sources
How we decide: our method.