Does the TCL Flip 3 (US model) work on O2 (Telefónica)?

Q: Does the TCL Flip 3 (US model) 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. We haven't found confirmation that 4G Calling works on O2 (Telefónica). Its 4G bands (2, 4, 5, 12, 13, 41, 66 (US bands)) don't match O2 (Telefónica)'s, so expect no 4G data.

Last checked 23 Oct 20265 sourcesWorked out from published specs

Mostly, with a catch.

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. We haven't found confirmation that 4G Calling works on O2 (Telefónica). Its 4G bands (2, 4, 5, 12, 13, 41, 66 (US bands)) don't match O2 (Telefónica)'s, so expect no 4G data.

Expect it to work, but read the switch-off dates below. That's where the catch is.

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)

TCL Flip 3 (US model)

2G: GSM 850 / 900 / 1800 / 1900
3G: 850 MHz, 1700/2100 (AWS) MHz, 1900 MHz, 2100 MHz
4G bands: 2, 4, 5, 12, 13, 41, 66 (US bands)
4G Calling: unknown – Built for US networks.

Other networks in Germany

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

Everything about the TCL Flip 3 (US model) · All phones on O2 (Telefónica) · Dumbphones that work in Germany

Using a TCL Flip 3 (US model) on O2 (Telefónica)? Tell us how it went and we'll update this page. Report your result.

Sources

How we decide: our method.