My Fairphone 5, because it has allowed me to break free from Google and other big tech companies by letting me install whatever I want on it.

And my good old Thinkpad.

Welcome! It feels good to be more free. Highly recommend.

Mine works very well as a phone in my corner of the world, northern Europe. So you just need the right model for your area.

Just make sure to pick the right device if you are considering trying it. The ports can be very different, and some devices do not support VoLTE, or work well on the carriers of your region.

APN settings are mostly a one off thing, yes, depending on your carrier.

Bluetooth can be a bit stubborn, requiering turning BT off and on again to see the things you want to connect to, and some things will just never connect. But there's improvements coming every month or so. It's easy enough once you learn the tricks your particular device needs. Every port is a bit different.

I use Linux apps or browser based services. There's Android app support through Waydroid which works for many things, but many apps have special security checks now that won't work in Waydroid, so the browser is my friend for banking in particular.

UT is usable, but it is different from Android (and desktop Linux) and you'll need to adapt some new habits.

It depends on what you expect from your phone. If you want calls, messages, browsing and easy tasks, Ubuntu Touch can be pretty maintenance hand hassle free apart from the OTA updates. I daily drive it and I'm glad to trade a few painpoints for the freedom I get. But there are some quirks that you may have to handle concerning things like bluetooth, APN settings and others. And of course, you get a lot of the freedom you would on other Linux systems, so it can get as complicated as you want it.