I honestly don’t understand how it can be slower than those feature phones, and yet it is. Sure, bigger screen resolution doesn’t help, but those ran some interpreted Java..

Does pinephones perhaps have some scheduling issues? That’s the only thing I can think of, it either has way too many processes and/or the switching is way too frequent. But linux itself manages it quite well in my experience even on low-end devices so I honestly don’t know.

EDIT: I assume parent does as well, but I definitely meant the non-pro pinephone here. I don’t have the pro one, but that presumably performs better.