I understand as I recently bought a de-Googled Linage OS One+ 6. I'll still keep my Nexus 5 and I too am hopeful that one day I can have a full fledged Linux phone such as a Pine Phone for a daily driver. I'll keep using Ubuntu on both my laptops.

My N5 (with T-Mobile) is in a dead zone, so I have to drive about a mile before it will connect with the T-Mobile tower. For funzie's today I went to the AT& T store to see if maybe the N5 would work. The employee there took the sim card out of his phone and put it in mine. It connected and with data use to for about a minute or so then disconnected. He took the card out and put it back in his phone and um. AT&T blocked his number. Oops, he had to make a call on another phone to get them to unblock it and he told them what he did. Sooooo, apparently AT&T has the capability to accept these phones but they choose not to. Anyway, I'm hoping T-Mobile will put a tower in my area because $15.00 a month a great price. Even if AT&T would have worked they wanted $35.00 a month for their most basic plan.