Question: what is the difference between android 9.0 pie and 8.1 oreo?
Answer: App previews are flat cards that sit side-by-side, not on top of each other, as in Android Oreo. This is the most start visual difference between Android 8 and 9. ... The new Recent Apps screen is much more consistent with the visual design of the system, and seems less like the appendix at the back of a book.