Does the Light Phone III work on Telekom?

Q: Does the Light Phone III work on Telekom?

Works. Light's own compatibility checker says the Light Phone III will work with Telekom in Germany (it lists Deutsche Telekom, Vodafone, O2 and 1&1; checked 23 Oct 2026). Light's spec sheet lists 4G and 5G only, so calls go over 4G Calling.

Last checked 23 Oct 20266 sourcesLight's checker (23 Oct 2026)

Yes.

Works

Light's own compatibility checker says the Light Phone III will work with Telekom in Germany (it lists Deutsche Telekom, Vodafone, O2 and 1&1; checked 23 Oct 2026). Light's spec sheet lists 4G and 5G only, so calls go over 4G Calling.

Nothing on Telekom's published plans affects this pairing right now.

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

Telekom (Germany)

3G: Switched off in 2021
2G: On until 30 June 2028, when Telekom plans to switch it off completely

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 Telekom: congstar. Smaller networks sometimes handle 4G Calling differently, so check with them too.

Other networks in Germany

Vodafone Works
O2 (Telefónica) Works
1&1 Works

Everything about the Light Phone III · All phones on Telekom · Dumbphones that work in Germany

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Sources

How we decide: our method.