Well, here's another UX nit to pick with Signal. On Signal, I have multiple contacts that have been uploaded/updated somehow. They are grayed out in the address book so I'm kinda sure they are not on Signal just someone else that knows them.

What's not clear to me is why/how this is being determined.

On a side note, this is one reason why I would contend that phone numbers (or a SHA256 equivalent) is not a good selector to use for Signal. It could easily be a privacy preserving custom field (that is then hashed) without accidentally sharing PII. This would also have the benefit of being able to reset the field without too much pain. Having to reset and get a new number is much more painful.

One last thing, has anyone else noticed that Signal seems to use an inordinate amount of data when not using it? Once again, not clear to me why this much data transfer is needed. I just checked my phone and 359MB of data has been sent in the last 30 days. I use Signal sparingly (mostly because most of my contacts are not on it) and never a voice call over LTE. So I have no idea what is causing that much data to be transferred.