A few days ago I tried to add a contact to Signal. The other person is already a user as none of us can find the other on the network.
On my side, I get a message that the number is still not on Signal, while on the other side the network returns an “unknown error” message when searching for my contact.
What may be causing issues, although it makes no sense for me:
- I’m an Android user, while the other phone is an iPhone
- we’re from different countries, including different continents, with an ocean apart
Another person, on that same country, has already added my number to their Signal on an Android phone, as well as another number from my country.
This makes no sense whatsoever to me.
Any thoughts?


Try this setting, I think it may be relevant to your case:
Android -> open Signal (or Molly) -> Settings -> Privacy -> Phone number -> Choose who can see your phone n…
Late response. Thank for your answer and I hope this will find you well. I had my number set to private but I disabled the setting and regardless it still kept returning the same error. And even while being set to private, I had another person add my number to signal, just by adding my number to their phone contact list. The first message sent to me was held on waiting until I accepted it.