Does the HMD 105 4G work on O2 (Telefónica)?

Q: Does the HMD 105 4G work on O2 (Telefónica)?

Works with caveats. Calls and texts can fall back to 2G. O2 switches 2G off in the second half of 2028 and asks people to replace 2G-only devices by 1 July 2028. It supports 4G Calling, but we haven't found confirmation that it's enabled on O2 (Telefónica). 4G data should work (shared bands: 1, 3, 7, 8, 20).

Last checked 23 Oct 20265 sourcesWorked out from published specs

Yes, for now.

Works with caveats

Calls and texts can fall back to 2G. O2 switches 2G off in the second half of 2028 and asks people to replace 2G-only devices by 1 July 2028. It supports 4G Calling, but we haven't found confirmation that it's enabled on O2 (Telefónica). 4G data should work (shared bands: 1, 3, 7, 8, 20).

It works today, but calls on the HMD 105 4G rely on a part of O2 (Telefónica)'s network with a switch-off on the way. Check the dates below before you commit for years.

We worked this out from the phone's published bands and O2 (Telefónica)'s own published network facts (see How we check). Nobody has confirmed it for this exact pairing yet.

O2 (Telefónica) (Germany)

3G: Switched off in 2021
2G: On until the second half of 2028 (replace 2G-only devices by 1 July 2028)

HMD 105 4G

2G: GSM 900 / 1800
3G: 850 MHz, 900 MHz, 2100 MHz
4G bands: 1, 3, 5, 7, 8, 20
4G Calling: yes – Listed in HMD's VoLTE-verified product list (TA-1653). One GSMArena owner says VoLTE only worked on some operators.

Other networks in Germany

Telekom Works with caveats
Vodafone Works with caveats
1&1 Works with caveats

Everything about the HMD 105 4G · All phones on O2 (Telefónica) · Dumbphones that work in Germany

Using a HMD 105 4G on O2 (Telefónica)? Tell us how it went and we'll update this page. Report your result.

Sources

How we decide: our method.