I am not aware of any Replicant build for the PinePhone, otherwise I would have had to try it out and make a video about it [0]. GloDroid [1] has incomplete support for the PinePhone (no support for anything the EG25-G does), that‘s all in terms of Android aside from Anbox or WayDroid that run on top of Linux.
Oh, I'm pretty darn sure I saw it on the supported devices page yesterday. Can't see it now. Hallucinations? :) It's very strange to me that no Android ROM has made it to the PinePhone yet.
[0] https://linmob.net/videos
[1] https://github.com/GloDroid/glodroid_manifest/releases