tried it as a daily driver

[nelstomlinson]

As nice as the UT environment is, the modem isn't stable enough for OP's needs here. If they are talking about always being reachable then you need a reliable modem and the last time I tried UT (a few weeks ago), the modem would cut out but also not tell you it has cut out (shows full bars) which is a game breaking bug for someone who needs to be reachable. In Phosh and Plasma Mobile when the modem cuts out it shows you have zero bars and no modem which is probably what OP needs because the sad fact is, the modem will cut out sooner or later.

The modem does flake out occasionally, and I do have to watch for it. Fortunately, even when data is broken phone calls usually go through. As you say, when the phone isn't working on Mobian it does show up in the status area at the top of the screen, and yes, I do see that, sometimes several times in a day.