I have an ulefone power 6 with android 9. Lately i am facing a problem that keeps being worse every day. My screen freeze and nothing can do if touch it except if i close off with button the screen and reopen it.apps seems still running so i guess its not a memory matter. I reset it but almost after that the same thing. I reinstall all my apps and then i freezed them. I changed the running apps at startup but no luck