I have a French contact (phone number +33 ...) who went to Japan and got a mobile number there (+81 ...). We discussed via Whats App and Signal and now he is back in France.
I would like to remove his Japanese phone numbers but I simply cannot.
This is how I see his contact before the edition:
As you can see there is one French and two Japanese numbers. I then click on the edit icon and I see:
The Japanese numbers are not present.
There are nowhere to be found, I clicked on "show more fields", but these are just empty extra fields.
I remove the conversations from Signal (it was registered with the Japanese number, this is visible in the screenshot) - nothing. Note that I cannot actually edit a contact in Signal, it just mentions that this (Signal) contact is in my contacts - with the possibility to open the contact and what I get is the first screenshot.
I tried to edit the contact on the phone to add something and somehow influence the Japanese numbers - nothing. I tried a similar edit the contact on a PC via contacts.google.com - nothing. I tried to use the Samsung contact app - same problem.
After using Android extensively for 10+ years, this is the first time I see that. Any ideas would be greatly appreciated.
OS is Android 10, phone is Samsung Galaxy 9+.