All calls come up as Unknown on Three Network UK

Hi All,

Fairphone 3+
Android 13
E/os version 2.9-t-20250321478215-offical-FP3
Dated 21 March 2025
No updates found running latest version.

About 3 months ago all calls started to show up as “Unknown”
If the same person sends a text then SMS recognises it and states that its from “Jim” for arguments sake.

I contacted 3 support and they said it could be a faulty SIM…

Things done to try and resolve this before getting a replacement SIM.
1, Have put the SIM in another handset - called my number and that phone shows my name.
2, Checked through various settings on the phone - Cant find anything that looks obvious.
3, Factory reset the handset - same result calls “Unknown”
3a, Interestingly for some reason I received a couple of international scam calls one from Vienna the other from Massachusetts USA … both of those numbers are shown ?

4, Had a new SIM from Three and tried test 1 again call unknown

Have tried turning off VoLT, phone rings but doesnt show anything not even Unknown and therefore cant answer call.
WiFi Calling On or Off makes no difference.

It is driving me mad as I use the phone for business and its nice to see whos calling !

All ideas gratefully received.
Cheers
Pete

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