While my experience with PinePhone has been significantly better (sounds like you may have had a faulty unit), we have working close-to-mainline ports for a few Qualcomm-powered phones (e.g., Xiaomi Poco F1, OnePlus 6(t), Google Pixel 3a, ...) in OSes like postmarketOS or Mobian. Turns out these work a lot better - having phones build with components for phones makes a significant difference.