In 16 days I will have had the Z Flip 4 for a year. A few months in of me having it, the hard plastic back cover is peeling/lifting off, giving me the option to fully peel it off with my nails. When looking under the part that is peeling off, the part that covers the electronics and internals of the phone stays on, as if the peeling part is just a protective cover to make the phone even or something. I don't know whether to keep it on or peel it off, cause its peeling from every side and there is a lot of dust gathering underneath