I use it everyday (typing this on it), but not as phone replacement. With the keyboard is a great ultra portable tiny laptop. I also have an old phone with Ubuntu Touch, that is a better candidate as android replacement.

i use a pinephone as my daily driver, it works, but the battery life can be kinda bad, and mobile data you might have to do some setup, and the functional mobile app selection is… not great. I would probably recommend like something graphene os instead if you want something smoother maybe, but if you really want to, it can be used, but i did use a nokia brick before it so…

In terms of software, linux is ready for phones already. In terms of hardware the og pp isnt xD. Sent from my dual-boot oneplus 6 running LineageOS and droidian, which previously had postmarketOS and KupferOS