@Opolork I think the main concern about UT support is the last kernel version that the device has. For example, the older devices like Nexus 5 and bq E5 are not supported anymore because Ubuntu 20.04 has features or functionalities that need things from a newer kernel version that those devices don't have. Technically it is still possible to do but it'll take effort from someone and that someone doesn't exists There could be other things that might matter in terms of support so it basically depends on how much effort is needed to stay supported and if there's someone willing to do the work

A command I've found which changes the authentication method from the command line is: /usr/share/ofono/scripts/set-context-property 1 AuthenticationMethod pap The number may vary depending on which order the APNs are displayed in /usr/share/ofono/scripts/list-contexts. I found this on https://docs.droidian.org/info/apn/