[arglebarnacle]

I'm sensitive to this concern, but remember that the phone number you register with Signal doesn't have to be your real phone number or identical to the phone number of your primary Signal device.

You can just get a VOIP number or burner phone somewhere in a relatively anonymous manner, register it with Signal on your android phone, and go about your business if anonymity is an important requirement for you.

[xorcist]

Isn't that risky? The subscriber number will sooner or later be recycled for another device (in the case of burner phones) or customer (in the case of voip). They could in turn disrupt your Signal use.

[arglebarnacle]

I think I misspoke. Rather than a true burner phone you'd want to use a prepaid phone with minutes that don't expire, or that you can keep active by using a minute every 90 days etc.

Definitely a hassle, but for anyone for whom a phone number is insufficiently anonymous I would imagine they're used to it.

I admittedly don't know as much about the options for VOIP but I've got to to believe there's a way to get a phone number on the internet where you can receive SMS and keep it active indefinitely.