I am unsure about the satellite messaging. I don't think Visible supports it and from a search it seems to only be available on Verizon, T-Mobile, Xfinity and Spectrum. I could be wrong though. Not sure if contacting customer service would help but you could try to chat with them on the website, or send them a message on Facebook, X, Instagram or on their support page on Reddit.
As for domestic roaming it is available on Visible but from my understanding Visible doesn't have or get the same roaming agreements as the parent company, Verizon, does. So, you could be in an area where a phone on Verizon will have reception but Visible won't. Not sure how widespread this is though.
