“When you use Signal, your data is stored in encrypted form on your devices. The only information that is stored on the Signal servers for each account is the phone number you registered with, the date and time you joined the service, and the date you last logged on.”
Yes I am in the US and I understand that this is a US centric problem though SMS is the feature that set signal apart from other secure messaging apps and made it slightly easier to get people to join. It was a nice alternative to imessage on android as opposed to yet another messaging app. Even in the US I have had to use SMS, WhatsApp, fb messenger, instagram’s DMs, Line, Group me, Matrix, etc, to talk to different people and I was not going to convince many to switch to signal (I tried).